EP0457870A1 - Chasse-neige. - Google Patents

Chasse-neige.

Info

Publication number
EP0457870A1
EP0457870A1 EP91900026A EP91900026A EP0457870A1 EP 0457870 A1 EP0457870 A1 EP 0457870A1 EP 91900026 A EP91900026 A EP 91900026A EP 91900026 A EP91900026 A EP 91900026A EP 0457870 A1 EP0457870 A1 EP 0457870A1
Authority
EP
European Patent Office
Prior art keywords
ploughshare
plow
snow plow
link
ground
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
Application number
EP91900026A
Other languages
German (de)
English (en)
Other versions
EP0457870B1 (fr
Inventor
Johannes Sebulke
Michael Schneider
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.)
Schmidt Winterdienst und Kommunaltechnik GmbH
Original Assignee
Schmidt Winterdienst und Kommunaltechnik GmbH
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 Schmidt Winterdienst und Kommunaltechnik GmbH filed Critical Schmidt Winterdienst und Kommunaltechnik GmbH
Publication of EP0457870A1 publication Critical patent/EP0457870A1/fr
Application granted granted Critical
Publication of EP0457870B1 publication Critical patent/EP0457870B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • E01H5/063—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 snow-plough blades tiltable for shock-absorbing purposes
    • 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
    • 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
    • E01H5/066—Snow-plough blade accessories, e.g. deflector plates, skid shoes

Definitions

  • the invention relates to a snow plow with a device for driving over ground obstacles, the plow of which is articulated by means of upper and lower rigid links to a plow frame connected to the front of a carrier vehicle so that it can be raised and lowered.
  • Such a known snow plow has a relatively steep ploughshare in order to limit the impact forces when approaching an obstacle.
  • a so-called shock absorber strip is required which, as an elastic element, establishes the connection between the wear rail and ploughshare and contributes to shock absorption by deforming to the rear when the obstacle is passed over.
  • the lower edge of the wear rail which would cut under the floor surface in accordance with the alternative geometry, is additionally pushed against the floor until the ploughshare lifts up by pivoting the handlebars. Because of the relatively small angle of attack when the ploughshare is steep, the known snow plow is only suitable to a limited extent for use in very hard and stuck snow.
  • the angle of attack of the ploughshare is relatively large (approx. 30 °);
  • the suspension of the ploughshare enables clearing snow to be cleared under ground pressure by means of a pressure device supported on the vehicle.
  • the ploughshare When approaching an obstacle, the ploughshare is pivoted about the plow tube after overcoming a force limiting device and against the pull of a return spring, so that the lower edge of the ploughshare climbs over the obstacle.
  • the pivoted ploughshare is locked under the action of the return spring, aided by a brief reset of the carrier vehicle, in the clearing position with simultaneous engagement in the force limiting device.
  • a pivotable flap is ensured, which can be folded on the lower edge of the ploughshare about a horizontal axis running transversely to the clearing direction in the direction of the rear of the ploughshare.
  • the entire plow has to be raised slightly to ensure that the flap, which is deflected by an obstacle, returns to the clearing position without any problems.
  • the aim of the present invention is to create a snow plow that does not have the disadvantages of known snow plow constructions mentioned, but rather enables a smooth crossing of ground obstacles for any, also large, angle of attack, thereby largely avoiding vertical impacts and after driving over one Obstacle automatically returns to the clearing position.
  • the pretensioning force of the restoring device is expediently overcome in the form of a return spring (feature 1.3 and dependent claim 5).
  • the return spring is expediently dimensioned so that pivoting at normal working pressures, that is to say also in the case of hard frozen snow, is avoided. Only when impact forces are about 30% above normal clearing forces does the flap swing back when driving over the obstacle.
  • the lifting link moves upwards and causes the upper and lower links to pivot accordingly clockwise around their articulation points on the plow frame. As a result, the ploughshare is lifted without delay, whereby the lower edge of the wear rail is never pushed off the ground, but is moved directly upwards from the clearing position.
  • the snow plow according to the invention is universal, i.e. largely independent of the pressure of the plow against the ground. can be used without restriction to the type of carrier vehicle or the suspension of the snow plow or certain vertical contact forces exerted by the carrier vehicle on the snow plow.
  • Stop is expediently realized (according to sub-claim 3) in such a way that it is formed by a stop surface on the lower link and a counter stop surface on the rearward extension of the ploughshare.
  • the clearing position of the ploughshare can be set exactly by adjusting at least one stop surface (according to subclaim 4). This is particularly important in the case of plowshares consisting of a plurality of coulter segments arranged next to one another in the horizontal direction, because this makes it easy to precisely adjust the height of all coulter segments.
  • the lower link is articulated on the plow side on a rear extension of the ploughshare and that the lifting link is connected to an extension of the lower link is articulated, the articulation point being arranged closer to the rear of the ploughshare than its articulation on the lower handlebar.
  • the lower link is expediently designed as a triangular link, the lower articulation point of which is articulated on the rear extension of the ploughshare.
  • the plow frame During the upward deflection movement of the ploughshare, the plow frame essentially maintains its height above the ground, the plow weight being absorbed by a limiting skid attached to the rear of the plow frame, which thus ensures a constant adjustment height of the snow plow above the ground .
  • Limiting skids of this type are generally customary; they have a sliding surface made of abrasion-resistant plastic and are expediently pivoted about a vertical axis.
  • underfloor freedom of the snow plow ie the elimination of vertical impacts when approaching an obstacle and the above-described triggering of the lifting plow of the snow plow by a pure horizontal force are guaranteed by the selected handlebar geometry; it is essential that the trajectory of the lower edge of the wear rail has an approximately horizontal tangent at the beginning of the lifting movement or at the end of the lowering movement. This is best achieved with a simultaneous minimization of the impact forces by means of a parabolic trajectory of the wear rail above the floor, whereby essentially only the horizontal tangent of the trajectory that is important for other trajectories such as the circle or the ellipse.
  • Fig. 1 shows a schematic cross section through the ploughshare in the Räu position, Fig. 2, the ploughshare according to Fig. 1 in the by
  • the ploughshare 1 has a relatively large angle of attack o of about 30% in the clearing position. This angle of attack is particularly suitable for clearing hard frozen or stuck snow.
  • the lower edge of the ploughshare 1 is formed by the wear rail 2, which is interchangeably attached to a flap 3 as a wear rail carrier.
  • the flap 3 is articulated about a horizontal axis 4 on the overlying part of the ploughshare 1 and has a further articulation point 5 for a rigid lifting arm 6, the other end of which is articulated on an extension 7 of a lower arm 8.
  • the ploughshare 1 is articulated by means of the lower link 8 and an upper link 9 on a plow frame 10.
  • the plow frame 10 is in turn connected to the front of a carrier vehicle by means of a lifting device (not shown) that can be raised and lowered.
  • a depth-limiting skid 12 is provided on the rear of the plow frame 10, which is suspended so that it can pivot about a vertical axis 13 and preferably has a sliding body 14 made of abrasion-resistant plastic.
  • the position of the ploughshare 1 with respect to the plow frame 10 is defined by a stop 15, which is formed by a stop surface 16 on the lower link 8 and a counter-stop surface 17 (FIG. 2) on a rear extension 18 of the plow share 1. On the extension 18 there is also the plow-side articulation point 19 of the lower link 8.
  • the ploughshare 1 is pretensioned by means of a return spring 20 against the stop 15, the upper end of the return spring 20, which is subjected to tension, on a hook 21 on the rear of the plow share 1, the lower end of the return spring 20 on a hook 22 on the plow frame 10 is mounted.
  • a ground obstacle 23 up to a height of 250 mm can be passed quickly without interrupting the clearing.
  • the ploughshare 1 is raised relative to the plow frame 10, the two links 8, 9 pivoting upward and the return spring 20 being extended accordingly.
  • the stop surfaces 16, 17 forming the stop 15 are separated from one another until the ground obstacle 23 has been completely passed over.
  • the lower edge 24 of the wear rail 2 slides over the top of the ground obstacle 3, the wear rail 2 being deflected rearward and forming a negative angle of attack with the vertical.
  • the flap 3 is correspondingly pivoted rearward about the horizontal pivot axis 4, so that the articulation point 5 of the lifting link 6 is clearly one
  • the ploughshare 1 is raised by pivoting the lower link 8, to which the upper end of the lifting link 6 is articulated.
  • the plow frame 10 While driving over the ground obstacle 23, the plow frame 10, supported by the limiting skid 12, maintains its position above the ground 11. It is not necessary that a ground pressure force possibly exerted on the plow frame 10 by the carrier vehicle is switched off during the drive-over process.
  • the raising and lowering of the ploughshare during the overcoming of an obstacle takes place completely independently of such a vertical pressing force, namely exclusively depending on a horizontal counterforce, the size of which enables the tension in the return spring 20 to be overcome.
  • the lower edge 24 of the wear rail 2 describes an approximately parabolic movement path 25 according to FIG. 3.
  • the height H is plotted against the time t, the height difference Reference h corresponds to the maximum height of the ground obstacle.
  • the ploughshare moves between its clearing position R and its raised position A during the lifting or lowering, the ploughshare tilting forward overall during the lifting, as clearly shown in FIG. 3 when these positions A, R are compared becomes.
  • the horizontal tangent of the movement path 25 in the area of the clearing position R of the ploughshare 1 is essential for the response behavior in the event of a drive-over impact.
  • This horizontal tangent corresponds to the time axis t in FIG. 3. 3 also makes it clear that because of this horizontal tangent to the movement curve 25, the lifting movement of the ploughshare is triggered solely by a horizontal counterforce.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Soil Working Implements (AREA)

Abstract

Un chasse-neige avec un dispositif permettant de franchir des obstacles au sol présente un soc de charrue (1) articulé à un cadre de charrue (10) au moyen de barres directrices rigides supérieure et inférieure. Le cadre de charrue (10) est raccordé à l'avant d'un véhicule porteur et peut être relevé et abaissé. Le soc de charrue (1) est précontraint, au moyen d'un dispositif de rappel élastique par rapport au cadre de charrue (10), contre le sol (11). Une barre directrice de levage (6) est articulée d'une part à un volet (3) portant la glissière d'usure (2), d'autre part à la barre directrice inférieure (8). La barre directrice de levage (6) effectue le soulèvement du soc de charrue (1) lorsqu'un obstacle fait pivoter en arrière le volet (3) fixé de manière pivotante à ladite barre directrice de levage. Le mouvement de descente du soc de charrue (1) est bloqué par une butée dans sa position de déblaiement.
EP91900026A 1989-12-11 1990-12-07 Chasse-neige Expired - Lifetime EP0457870B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3940887 1989-12-11
DE3940887A DE3940887A1 (de) 1989-12-11 1989-12-11 Schneepflug
PCT/EP1990/002116 WO1991009177A1 (fr) 1989-12-11 1990-12-07 Chasse-neige

Publications (2)

Publication Number Publication Date
EP0457870A1 true EP0457870A1 (fr) 1991-11-27
EP0457870B1 EP0457870B1 (fr) 1994-06-22

Family

ID=6395246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91900026A Expired - Lifetime EP0457870B1 (fr) 1989-12-11 1990-12-07 Chasse-neige

Country Status (4)

Country Link
EP (1) EP0457870B1 (fr)
AT (1) ATE107723T1 (fr)
DE (2) DE3940887A1 (fr)
WO (1) WO1991009177A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1179638A2 (fr) 2000-08-11 2002-02-13 Schmidt Holding GmbH Chasse-neige

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4441654C2 (de) * 1993-12-20 1996-02-08 Theo Haering Schneepflug
DE29500723U1 (de) * 1995-01-18 1995-03-09 Gießler, Matthias, 77933 Lahr Schneepflug mit Schwenkklappenschürfleiste
DE10039256C2 (de) * 2000-08-11 2002-06-06 Schmidt Holding Gmbh Schneepflug
DE10256541A1 (de) * 2002-12-04 2004-07-15 Fritz Sperber Gmbh & Co. Räumschild mit schwenkbarer Schürfleiste
US20070128013A1 (en) 2005-12-01 2007-06-07 Grant Hanson Apparatus protecting vehicle with bucket when bucket strikes fixed object
US8732988B2 (en) 2006-11-30 2014-05-27 Glenridge, Inc. Implement with linkage assembly and work assembly wherein work assembly has dynamic skid shoe and a scraping edge
US8881433B2 (en) 2006-11-30 2014-11-11 Glenridge, Inc. Implement attaching to a forward motion-producing machine for elevating an edge encountering an immovable object
RU2361035C1 (ru) * 2008-02-01 2009-07-10 Федеральное государственное образовательное учреждение высшего профессионального образования "Тюменская государственная сельскохозяйственная академия" Подвеска плужного снегоочистителя
DE202010001687U1 (de) 2009-03-31 2010-08-12 Wiedenmann Gmbh Räumpflug insbesondere mit mehrteiliger Pflugschar
RU2602516C1 (ru) * 2015-07-02 2016-11-20 Федеральное государственное бюджетное образовательное учреждение высшего образования "Иркутский государственный университет путей сообщения" (ФГБОУ ВО ИрГУПС) Автоматическая система управления рабочими органами плужного снегоочистителя
WO2020087179A1 (fr) * 2018-10-31 2020-05-07 Duchesneau Paul Chasse-neige comprenant une lame de coupe à angle de coupe positif et grattoir à glace

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT269204B (de) * 1967-05-26 1969-03-10 Anton Kahlbacher Schneepflug-Zusatzgerät
DE2421713B1 (de) * 1974-05-04 1975-10-30 Ing. Alfred Schmidt Gmbh, 7822 St Blasien Schneepflug
DE2617235C3 (de) * 1976-04-20 1980-05-29 Gottfried Dr. 8124 St Heinrich Reissinger Befestigungsvorrichtung einer Schürfleiste an einer Räumschar eines Straßenräumgerätes, insbesondere Schneepfluges
CH638007A5 (en) * 1979-02-07 1983-08-31 Boschung Marcel Ag Single-side snow plough
EP0115563B1 (fr) * 1983-02-03 1987-09-30 Ing. Alfred Schmidt Gmbh Lame chasse-neige à volets rappelés par ressorts
DE3420872A1 (de) * 1984-06-05 1985-12-05 Karl-Heinz 2420 Eutin Meier Einseitenschneepflug

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9109177A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1179638A2 (fr) 2000-08-11 2002-02-13 Schmidt Holding GmbH Chasse-neige

Also Published As

Publication number Publication date
EP0457870B1 (fr) 1994-06-22
ATE107723T1 (de) 1994-07-15
DE3940887A1 (de) 1991-07-04
DE3940887C2 (fr) 1991-10-31
DE59006240D1 (de) 1994-07-28
WO1991009177A1 (fr) 1991-06-27

Similar Documents

Publication Publication Date Title
DE1929177C3 (de) Straßenräumgerät
EP0271645A1 (fr) Chasse-neige
EP0457870B1 (fr) Chasse-neige
DE1708665B1 (de) Schneepflug
DE2617235C3 (de) Befestigungsvorrichtung einer Schürfleiste an einer Räumschar eines Straßenräumgerätes, insbesondere Schneepfluges
DE202014002808U1 (de) Landwirtschaftliche Maschine
EP1247906A2 (fr) Chasse-neige avec charrue multiple
AT396600B (de) Schneepflug
AT504789B1 (de) Schneepflug
EP1557494B1 (fr) Chasse-neige
DE3542479C2 (fr)
EP2210473B1 (fr) Mécanisme de tonte doté d'un dispositif de transport transversal
DE4224220C2 (de) Schneepflug
DE2603283A1 (de) Hinterer sicherheits-stossdaempfer fuer kraftfahrzeuge
AT409772B (de) Schneepflug mit einer aus mehreren scharsegmenten bestehenden pflugschar
AT519380B1 (de) Schneepflug mit ausweichenden Scharteilen
DE3237944C2 (fr)
DE4121231C2 (de) Schneestaubabweiser für Schneepflüge
DE964778C (de) Schneepflug mit waagerecht geteilter Pflugschar
DE3325620C2 (de) Schneepflug
DE4124469C1 (en) Snow clearance plough share - has clearance bar fitted to underside of share and also has linkage rods connecting share to frame
AT504910B1 (de) Schneepflug mit einem traggestell für eine ein- bzw. mehrteilige räumschar
CH601577A5 (en) Front mounted snowplough obstacle encounter deflecting hinge
AT258347B (de) Räumleiste der Pflugschar eines Schneepfluges
DE2203271C3 (de) Schneepflug

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE FR IT LI

17P Request for examination filed

Effective date: 19911219

17Q First examination report despatched

Effective date: 19930210

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR IT LI

REF Corresponds to:

Ref document number: 107723

Country of ref document: AT

Date of ref document: 19940715

Kind code of ref document: T

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 59006240

Country of ref document: DE

Date of ref document: 19940728

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19950831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20021223

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20021224

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030226

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040701

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051207