EP2021548B9 - Barre d'usure ondulée - Google Patents

Barre d'usure ondulée Download PDF

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Publication number
EP2021548B9
EP2021548B9 EP07724959.7A EP07724959A EP2021548B9 EP 2021548 B9 EP2021548 B9 EP 2021548B9 EP 07724959 A EP07724959 A EP 07724959A EP 2021548 B9 EP2021548 B9 EP 2021548B9
Authority
EP
European Patent Office
Prior art keywords
plane
clearing bar
contour
road
clearing
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.)
Active
Application number
EP07724959.7A
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German (de)
English (en)
Other versions
EP2021548A1 (fr
EP2021548B1 (fr
Inventor
Jürgen Thomas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kueper GmbH and Co KG
Original Assignee
Kueper GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kueper GmbH and Co KG filed Critical Kueper GmbH and Co KG
Priority to PL07724959T priority Critical patent/PL2021548T3/pl
Publication of EP2021548A1 publication Critical patent/EP2021548A1/fr
Application granted granted Critical
Publication of EP2021548B1 publication Critical patent/EP2021548B1/fr
Publication of EP2021548B9 publication Critical patent/EP2021548B9/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E01H5/061—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

Definitions

  • the invention relates to a scraper blade for the plow blade of a snow plow which is provided in its remote from the road to be cleared area with a substantially planar attachment neck, which is intended to be grasped by fasteners and fixed to the plow blade, wherein at least parts of the fastener extending in the direction of travel out of the plane of the attachment neck, wherein the cross section of the Räum advisor is bounded transversely to the longitudinal extent of a contour having in the road near two linear sections, of which the first section is arranged with respect to the direction of travel of the snowplow so in that, when driving the snow plow, it scraps the snow off the road and conveys it upwards, while the second section runs parallel to the road surface and serves as a footprint exposed to constant wear and, over the entire length of the scraper blade or at least t in the region of the fastening means, the cross-section of the scraper above the first linear portion is bounded by a curved contour which passes between the road and the fastening neck
  • the scraper is a wearing part that is attached to the roadside end of the snowplow clearing blade.
  • the scraper She is pushed onto the asphalt, scratches the snow from the road and leads it into the plow blade, which pushes the collected snow aside.
  • a conventional prior art scraper bar shows FIG. 1 ,
  • the curved plow blade 1 of a snow plow is guided in the direction of travel F along the road 2.
  • a scraper blade 3 is mounted, with which the plow blade 1 presses against the road 2.
  • the scraper 3 has a substantially planar attachment neck 4, with which the scraper blade 3 is attached to the Räumschlid 1.
  • the attachment takes place with the aid of fastening means 5, which grip the scraper in the region of the fastening neck 4 and fix it on the plow blade 1.
  • the fastening means 5 are usually screws (as in FIG.
  • the scraper When advancing in the direction of travel F, the scraper triggers 3 lying on the road 2 snow 6 and directs it upwards in the direction of the curved plow blade 1.
  • the foothills reach the windshield of the clearing vehicle and can clog them with snow.
  • the driver's view is considerably limited.
  • some publications are known, which deal with the keeping away of the resulting in the plow blade snow vortex from the windshield. As an example, here are the US 5,309,653 and the DE 299 01 383 U1 ,
  • the disclosure US 1,944,307 a grading device for deepening and leveling a running along a paved road unpaved side strip, with a plurality of attached to a carrier leveling plates, which are profiled wavy at its front. They cover this Leveling plates completely behind the carrier, so that the flowing over the plates, detached from the road surface material can not encounter any flow resistance.
  • a carrier leveling plates which are profiled wavy at its front. They cover this Leveling plates completely behind the carrier, so that the flowing over the plates, detached from the road surface material can not encounter any flow resistance.
  • the present invention has the object, the scraper for the snow blade of a snowplow educate so that a turbulent flow within the ploughshare is largely avoided, thus obstructing snowdrifts in the windshield of the clearing vehicle without to avoid additional equipment expense.
  • the invention proposes, starting from a dozer blade of the type mentioned above, that the tangent to the curved contour is aligned parallel to the plane of the fastening neck, and that the tangent to the curved contour in a lying between the road and vertex adjacent point of the vertex pierces the plane of the fastening neck.
  • the contour of the front of the scraper is formed between the first linear section and the mounting neck a streamlined hump, in the "snow shadow" are the protruding parts of the fastener.
  • the wave profile according to the invention need not be maintained over the entire length of the scraping. It is sufficient in principle to provide it only in the field of fasteners. However, the geometry of the scraping becomes more complex, the contour changes over the length, it creates different cross-sections. In the interest of manufacturing costs, it is therefore advisable to maintain the contour of the invention over the entire length of the scraper.
  • the shield effect of the hump is particularly effective when the vertex is as close as possible to the protruding part of the fastener Geometrically, this is achieved when the vertex of the vertex in the plane of the attachment neck has a smaller distance to the protruding part of the fastener than to the intersection of the plane with the road.
  • the distances mentioned are each measured as measured within the plane. Due to wear of the scraper, the vertex "wanders" in the direction of the road; the distance of the vertex to the intersection decreases over the life of the scraper. Thus, the wear limit of the scraper is about reached when the distance of the vertex to the road is smaller than the protruding part.
  • the turbulence-free flow of snow in the ploughshare also has a positive effect on the evacuation:
  • the sliding behavior of the scraper is improved, the snow is thrown by the wavy profile a little in the direction of travel and loosened by the wind and therefore flows better in the ploughshare from the side.
  • the clearance is thereby reduced, the power requirement of the clearing vehicle decreases.
  • a scraper is a wearing part that wears at its street-side end.
  • FIG. 1 and DE 81 29 044 U1 - Is provided in the entire wear area of the scraper a constant footprint.
  • a variable thickness of the scraper in the direction of travel is accompanied by the wear area, which leads to uneven wear.
  • the aerodynamically optimized scraper is preferably made of rubber. Since the rubber surface is too soft for the abrasive snow flow, it is recommended to reinforce the contour of the scraper at least in sections with steel. It is then a so-called sandwich scraper made of rubber and steel.
  • a hard material body is embedded in the rubber. This hard body slows the wear of the scraper on the road.
  • the hard material body may optionally be embodied as a ceramic molded body or as a hard metal core surrounded by a steel shell.
  • the ceramic molded body has the advantage that it can be produced by a sintering process, which allows a great deal of freedom in terms of the contour of the molded body. Thus, it is possible to let the contour of the molding run parallel to the contour of the scraper, whereby the proportion of ceramic in the wear surface always remains constant.
  • the sintering process of the carbide core does not allow this, so it must be made with a linear contour.
  • a flow dynamic not optimized scraper with carbide core describes the applicant in its disclosure DE 10 2004 029 165 A1 ,
  • the invention can also be implemented as a solid steel scraper.
  • FIG. 2 illustrated scraper strip 3 according to the invention is fixed instead of a conventional scraper on the street-side end of a plow blade 1 by means of existing fasteners 5 on the mounting neck 4.
  • the planar mounting neck 4 extends within an imaginary plane 9. Due to the principle, parts 7 of the fastening means 5 protrude in the direction of travel F from the plane 9 to grip the mounting neck 4 and can fix.
  • the fastener is designed as a simple screw.
  • the part 7, which rises out of the plane 9, is the screw head 7. Nevertheless, parts of a clamping claw or a special attachment could protrude.
  • FIG. 2 represented cross section of the Räummann 3 is bounded by a contour that includes curved and linear sections.
  • the contour is designed almost over its entire circumference as a curved contour 10, only in the region of the plane 9 of the fastening neck 4 and at its street end, the curved contour 10 is replaced by linear sections 11a, 11b, which will be explained later.
  • the curvature of the Curved contour 10 can be described mathematically with the aid of tangents, which in each case conform to the contour 10 at one point.
  • the curved contour 10 has a vertex 12; the associated tangent 13 extends here parallel to the plane 9 of the attachment neck 4.
  • a neighboring point 14 whose tangent 15 pierces the plane 9 in a puncture point 16 below the apex 12.
  • the neighboring point 14 is located at an infinitesimal distance below the apex 12. Since this is graphically barely representable and the puncture point 16 would be very far outside the drawing area, the neighboring point 14 is shown a bit further down shifted.
  • the contour 10 is concavely curved at the apex. In a convex curvature in the context of the invention, the puncture point 16 would be above the apex 12.
  • the concave curvature of the vertex 12 is in the embodiment of FIG. 1 Seen in the direction of travel before the imaginary plane 9. His vertical distance to the plane 9 is chosen so large that it projects beyond the protruding from the plane 9 parts 7. By felling the solder from the apex 12 to the plane 9, the imaginary soldering point 120 is found. The distance of the soldering point 120 to the screw head 7 is smaller in the plane 9 than the distance of the soldering point 120 to the imaginary intersection 160 of the plane 9 the road 2. By this constellation, the screw head 7 is comparatively close to the vertex.
  • the scraper 3 In its region near the road, the scraper 3 has two linear sections 11a, 11b, a first 11a approximately transverse to the direction of travel F, a second 11b parallel to the asphalt surface of the road 2.
  • the first linear region 11a extends over the preferred wear region h of FIG clearing bar. It serves to scrape the snow from the road and to promote towards the curvature in the area of the apex 12.
  • the second linear Area 11b serves as a footprint of the scraper 2 and is constantly sanded.
  • the contour 10 passes through a sole point 17, the tangent 171 of which also runs parallel to the plane 9 of the neck region 4. From the second linear section 11b to the sole point 17, the contour 10 describes a curvature which ensures an approximately constant axial thickness of the scraping strip 3 over the preferred wear area h, so that the wear is as uniform as possible. It is also possible to drive the scraper blade 3 beyond the preferred wear area h, in extreme cases to the roadside approach of the mounting collar 4. However, the effect according to the invention is lost as soon as the scraper blade 3 is worn beyond the apex 12.
  • the Räummann 3 consists in its interior of rubber, which is reinforced on the contour with vulcanised steel (not shown).
  • a hard material body 18 is embedded whose contour runs essentially parallel to the contour 10 of the scraper blade 3 in this region.
  • the green compact of a ceramic hard material body can be shaped accordingly and then sintered.
  • the hard material body 18 may extend over the entire length of the scraping strip 3 or a plurality of columnar hard material bodies may be embedded next to one another in the scraping strip 3.
  • FIG. 2 The flow behavior of the scraper blade according to the invention FIG. 2 is in FIG. 3 shown.
  • the snow 6 lying on the road 2 is released from the first linear section 11a and accelerated in the direction of the apex 12. Since the contour of the scraper blade behind the apex 12 lowers in the direction of the fastening neck 4, the snow stream 19 retains its flow direction parallel to the plane 9 and flows past the protruding parts 7 of the fastening 5 without being swirled there. In the plow blade 1, he is directed accordingly to the side. From the linear portion 11a to the attachment neck 4, the corrugated portion of the contour forms a streamlined projection in the region of the apex 12 in which "Snow shadow" the protruding parts 7 of the fastener 5 are. A swirling or cumming of the snow is thus effectively avoided.
  • FIG. 4 shows an embodiment of a non-inventive scraper. This is largely symmetrical and has in the preferred wear area h a particularly long linear portion 11 a, in which a hard material body 18 is located from a surrounding of a steel shell 20 hard metal core 21. Since the contour of the hard metal core can not assume any free-form surface, its contour is essentially linear and extends parallel to the linear section 11a in the preferred wear region h.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Road Paving Structures (AREA)
  • Road Signs Or Road Markings (AREA)
  • Bridges Or Land Bridges (AREA)
  • Cleaning In General (AREA)

Claims (11)

  1. Lame de déblayage pour le bouclier de déblayage (1) d'un cluasse-neige, qui, dans sa partie opposée à route (2) à déblayer, est munie d'un col de fixation (4) sensiblement plat destiné à être saisi par des moyens de fixation (5) et à être fixé sur le bouclier de déblayage (1), au moins des parties (7) des moyens de fixation (5) dépassant dans le sens de déplacement (F) du plan (9) du col de fixation (4), la section transversale de la lame de déblayage (3) étant délimitée, dans son extension longitudinale, par un contour qui présente, dans sa partie proche de la route, deux parties linéaires (11a, 11b) dont la première partie (11a) est disposée par rapport au sens de déplacement (F) du chasse-neige de façon à ce qu'elle racle la neige de la route lors du déplacement du chasse-neige et la transporte vers le haut tandis que la deuxième partie (11b) est parallèle à la surface de la route et sert de surface d'appui exposée à une usure permanente, et la section transversale de la lame de déblayage (3) étant délimitée, sur toute la longueur de la lame de déblayage (3) ou au moins au niveau des moyens de fixation (5), au-dessus de la première partie linéaire (11a), par un contour incurvé (10) qui passe, entre la route (2) et le col de fixation (4), par un point culminant (12) situé hors du plan (9) du col de fixation (4), caractérisée en ce que la tangente (15) du contour incurvé (10) est parallèle, au niveau du point culminant (12) au plan (9) du col de fixation (4) et en ce que la tangente (15) du contour incurvé (10) rencontre le plan (9) du col de fixation (4) au niveau d'un point (14) voisin du point culminant (12) se trouvant entre la route (2) et le point culminant (12).
  2. Lame de déblayage (3) selon la revendication 1, caractérisée en ce que le point culminant (12) présente, dans le plan (9) du col de fixation (4), un point d'aplomb (120), la distance, mesurée dans ce plan (9), entre ce point d'aplomb (120) et la partie saillante (7) du moyen de fixation (5) étant inférieure à la distance mesurée dans ce plan (9) entre le point d'aplomb (120) et le point d'intersection (160) entre ce plan (9) et la route (2).
  3. Lame de déblayage (3) selon la revendication 1 ou 2, caractérisée en ce que le point culminant (12) se trouve devant le plan (9) du col de fixation (4) dans le sens du déplacement (F).
  4. Lame de déblayage (3) selon la revendication 3, caractérisée en ce que le point culminant (12) se trouve devant les parties saillantes (7) des moyens de fixation (5) dans le sens du déplacement (F).
  5. Lame de déblayage (3) selon l'une de revendications précédentes, caractérisée en ce que le contour (10) entre le col de fixation (4) et la route (2) passe par un point inférieur (17) situé derrière le plan (9) du col de fixation (4), la tangente (171) du contour (10) étant orientée parallèlement au plan (9) du col de fixation.
  6. Lame de déblayage (3) selon l'une de revendications précédentes, caractérisée en ce que la lame de déblayage (3) est constituée au moins partiellement de caoutchouc.
  7. Lame de déblayage (3) selon la revendication 6, caractérisée en ce que le contour (6) de la lame de déblayage (3) est renforcé au moins partiellement par une armature en acier.
  8. Lame de déblayage (3) selon la revendication 6 ou 7, caractérisée en ce que, dans le caoutchouc, au moins un corps en matériau dur (18) est intégré.
  9. Lame de déblayage (3) selon la revendication 8, caractérisée en ce que le corps en matériau dur (18) est un corps moulé en céramique dont le contour est parallèle au contour (10) de la lame de déblayage.
  10. Lame de déblayage (3) selon la revendication 9, caractérisée en ce que le corps en matériau dur (18) est un noyau métallique dur (21) entouré d'un revêtement métallique (20).
  11. Lame de déblayage (3) selon les revendications 1 à 5, caractérisée en ce que la lame de déblayage (13) est constituée d'acier.
EP07724959.7A 2006-05-11 2007-05-08 Barre d'usure ondulée Active EP2021548B9 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07724959T PL2021548T3 (pl) 2006-05-11 2007-05-08 Falista listwa zgarniająca

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006021910A DE102006021910A1 (de) 2006-05-11 2006-05-11 Gewellte Räumleiste
PCT/EP2007/004035 WO2007131663A1 (fr) 2006-05-11 2007-05-08 Barre d'usure ondulée

Publications (3)

Publication Number Publication Date
EP2021548A1 EP2021548A1 (fr) 2009-02-11
EP2021548B1 EP2021548B1 (fr) 2013-03-06
EP2021548B9 true EP2021548B9 (fr) 2013-09-18

Family

ID=38442003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07724959.7A Active EP2021548B9 (fr) 2006-05-11 2007-05-08 Barre d'usure ondulée

Country Status (8)

Country Link
US (1) US7905035B2 (fr)
EP (1) EP2021548B9 (fr)
AT (1) AT11589U3 (fr)
CA (1) CA2660809C (fr)
DE (1) DE102006021910A1 (fr)
ES (1) ES2421178T3 (fr)
PL (1) PL2021548T3 (fr)
WO (1) WO2007131663A1 (fr)

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US8209887B2 (en) 2009-06-17 2012-07-03 Syamal Kumar Ghosh Wear resistant support structures for utility equipment
DE102009051751A1 (de) * 2009-11-03 2011-05-05 Küper GmbH & Co.KG Räumleiste für den Räumschild eines Schneepfluges
US9290898B2 (en) 2012-02-20 2016-03-22 Ironhawk Industrial Distribution LLC Plow blade damping device and method
US8984778B2 (en) 2013-03-15 2015-03-24 Ironhawk Industrial Distribution LLC Plow blade and method
US10113282B2 (en) * 2014-11-03 2018-10-30 Nordic Auto Plow Llc Cutting edge attachment for snow plow
EP3250757B1 (fr) 2015-01-27 2020-03-04 MTD Products Inc Turbine de souffleuse à neige
DE102015120823A1 (de) 2015-12-01 2017-06-01 Küper Gmbh & Co. Kg Sandwich-Räumleiste
DE102016114457A1 (de) 2016-08-04 2018-02-08 Küper Gmbh & Co. Kg Räumleiste für den Einsatz bei hohen Geschwindigkeiten und langen Räumstrecken
US20210087779A1 (en) * 2019-09-25 2021-03-25 Caterpillar Inc. Bi-metal cutting edge

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Also Published As

Publication number Publication date
EP2021548A1 (fr) 2009-02-11
ES2421178T3 (es) 2013-08-29
PL2021548T3 (pl) 2013-09-30
ES2421178T9 (es) 2013-12-27
DE102006021910A1 (de) 2007-11-15
CA2660809C (fr) 2015-02-03
AT11589U3 (de) 2011-05-15
US7905035B2 (en) 2011-03-15
EP2021548B1 (fr) 2013-03-06
AT11589U2 (de) 2011-01-15
WO2007131663A1 (fr) 2007-11-22
CA2660809A1 (fr) 2007-11-22
US20090320332A1 (en) 2009-12-31

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