EP0226711B1 - Rotary snow cutter - Google Patents

Rotary snow cutter Download PDF

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Publication number
EP0226711B1
EP0226711B1 EP86112123A EP86112123A EP0226711B1 EP 0226711 B1 EP0226711 B1 EP 0226711B1 EP 86112123 A EP86112123 A EP 86112123A EP 86112123 A EP86112123 A EP 86112123A EP 0226711 B1 EP0226711 B1 EP 0226711B1
Authority
EP
European Patent Office
Prior art keywords
snow
frame
roller according
compacting
ribs
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.)
Expired - Lifetime
Application number
EP86112123A
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German (de)
French (fr)
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EP0226711A3 (en
EP0226711A2 (en
Inventor
Walter Haug Obering
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.)
Karl Kaessbohrer Fahrzeugwerke GmbH
Original Assignee
Karl Kaessbohrer Fahrzeugwerke GmbH
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Publication date
Application filed by Karl Kaessbohrer Fahrzeugwerke GmbH filed Critical Karl Kaessbohrer Fahrzeugwerke GmbH
Priority to AT86112123T priority Critical patent/ATE55438T1/en
Publication of EP0226711A2 publication Critical patent/EP0226711A2/en
Publication of EP0226711A3 publication Critical patent/EP0226711A3/en
Application granted granted Critical
Publication of EP0226711B1 publication Critical patent/EP0226711B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E01H4/00—Working on surfaces of snow or ice in order to make them suitable for traffic or sporting purposes, e.g. by compacting snow
    • E01H4/02—Working on surfaces of snow or ice in order to make them suitable for traffic or sporting purposes, e.g. by compacting snow for sporting purposes, e.g. preparation of ski trails; Construction of artificial surfacings for snow or ice sports ; Trails specially adapted for on-the-snow vehicles, e.g. devices adapted for ski-trails

Definitions

  • the present innovation relates to a snow blower for rear attachment to a snow groomer, with a milling shaft and a milling frame which is at least triangular in cross section and extends across the width of the snow blower, and has side plates with bearings for the milling shaft screwed onto its lateral ends.
  • Such a snow blower is already known from DE-U 85 28 096, which goes back to the applicant.
  • the milling frame shown there has a parallelogram-like cross-section, so that two milling-frame surfaces in cross-section form two sides of a triangular shape.
  • the milling frame is designed as a central frame, in the middle of which a gear is attached which drives two cutter shafts connected to the side of the gear.
  • the milling shafts are held in side bearings with their ends facing away from the gearbox.
  • This object is achieved in that at the lateral ends of the milling frame in a cross-sectional plane over two frame surfaces projecting and V-shaped mutually arranged webs are attached and in that two V-shaped mutually arranged hook strips are attached to the side of the side plate facing the milling frame, which engage behind the webs of the milling frame in the attached state of the side plate, the hook strips of the side plate forming a form-fitting clamp closure together with a retaining screw engaging on the milling frame.
  • the milling frame is designed as a hollow profile, to direct the webs inwards so that the hook strips of the side shields grip the webs in the interior of the milling frame. It is important in any case that the two hook strips have approximately the same angle as the two webs, although the webs, like the hook strips, can also be formed by a web or a hook strip, respectively, which are bent in a V-shape.
  • the hook strips grip the webs from the outside when the side plate is attached and the screw is attached to the milling frame at a distance from the milling frame surfaces.
  • a side plate is further facilitated by the fact that an insert pocket for the side plate opening towards the V-shaped webs is attached to the side of the milling frame, the retaining screw engaging through the insert pocket on the side plate and being designed as a tension screw.
  • the retaining screw engaging through the insert pocket on the side plate and being designed as a tension screw.
  • the insertion pocket is located on the side of the milling frame opposite the webs, a particularly effective locking of the side plate is also achieved.
  • the webs on the milling frame can be formed in a particularly simple manner in that a likewise triangular end cover, which projects beyond the cross-sectional area of the milling frame, is attached to the side of the milling frame.
  • a cover also has the advantage that it keeps a milling frame designed as a hollow profile closed even when the side plates are removed.
  • Particularly good guidance when pushing on a side plate can be achieved in that at the end of the side plate facing the insertion pocket a corresponding insertion flap is bent, to which a nut is attached.
  • the accessibility of the retaining screws of the side shields is improved in that the milling frame is designed as an impact body and that its lateral edges are designed to rise from the center of the milling frame.
  • the milling frame is in a bistable position, which can be used to place the milling frame for removing the side shields in such a way that its side end, which is being worked on, is directed upwards away from the ground.
  • an impact body contributes to better snow distribution and in particular prevents the formation of edge walls at the lateral edges of the snow blower.
  • the milling frame has a milling frame surface facing the slope, at the edges of two fastening grooves are incorporated to accommodate a smoothing device.
  • the smoothing device can be replaced quickly and easily by simply being inserted into the fastening grooves.
  • Lateral securing of the smoothing device can be achieved in that the attached side shields each cover at least one of the fastening grooves on the lateral end of the milling frame from the outside. In this way, a separate locking for the smoothing device can be dispensed with.
  • the smoothing device is provided with a front part which is triangular in cross section and fastened to the milling frame along a first side of the triangle, the second triangular side of which is formed from the milling frame in the direction of the slopes and towards the rear as a rigid compression surface and at its rear end with one plate-shaped, resilient part is connected, the resilient part extends approximately parallel to the second triangle side in the unloaded state and approximately horizontally in the loaded state, while a third triangle side is designed as a support extending from the rear end of the second triangle side to the cross member.
  • At least one transverse row of bead-shaped ribs extending in the direction of travel is attached to the side of the smoothing device facing the slope.
  • a first transverse row of ribs is attached to the underside of the web and extends to the second front triangle side of the rigid part.
  • Such a smoothing device is known from DE-GM 85 22 791, which also goes back to the applicant.
  • the ease of maintenance of the snow blower can be further increased in that the first transverse row of ribs is made of a hard, wear-resistant material.
  • the transverse rows behind in the direction of travel can be made of soft material.
  • the smoothing device preferably consists of polyurethane.
  • the wear resistance of the first transverse row can be increased simply by pouring corundum particles into the ribs of the first transverse row. Despite this measure, the smoothing device is hardly heavier, so that the replacement of the smoothing device is not made more difficult.
  • the ribs of the first transverse row towards the slope are covered with spring steel sheet.
  • This sheet can be kept relatively thin, since the ribs of the first transverse row give the sheet a certain dimensional stability, so that the sheet can be applied as a wear-reducing layer only.
  • the spring steel sheet can on the one hand be screwed onto the smoothing device, and on the other hand the spring steel sheet can also be inserted together with the smoothing device into the front fastening groove of the milling frame.
  • the spring steel sheet alone forms the second, slope and rear triangular side of the smoothing device and is connected at its rear end to the plate-shaped, flexible part.
  • This configuration of the smoothing device saves material, which reduces the weight of the smoothing device and thus improves the handling of the snow blower when the smoothing device is replaced.
  • the ribs of the first transverse row can also be designed as metal cams equipped with fastening anchors, which are cast into the smoothing device with their fastening anchors.
  • the ribs are designed in such a way that a more pointed part points in the direction of travel and the subsequent part widens against the direction of travel, an additional transverse compression of the snow is brought about in addition to the reduction in wear, which leads to a particularly well prepared slope.
  • the snow blower 1 comprises a support frame 2 for rear attachment to a snow groomer (not shown) and an impact body 3 fastened to the support frame 2 and extending over the entire width of the snow blower.
  • the support frame 2 is fork-shaped and screwed symmetrically to the center of the snow blower 1 with the impact body 3.
  • the impact body 3 itself is designed as a central milling frame, on which the following components are attached in a modular manner.
  • a gear 4 is screwed, which drives two milling shafts 7 and 8 extending on both sides from the gear 4 to the lateral ends 5 and 6 of the milling frame 3.
  • the outer Ren ends 9 and 10 of the milling shafts 7 and 8 are held in side bearings 11 and 12 attached to the lateral ends 5 and 6 of the milling frame 3.
  • the milling frame 3 consists of a parallelogram-shaped hollow body which can be produced, for example, from aluminum by extrusion.
  • a lower parallelogram side 13 of the milling frame 3 faces the slope and is aligned approximately parallel to it.
  • the parallelogram side 13 is followed by a second parallelogram side 14, which rises obliquely upwards.
  • This parallelogram side is designed as an impact surface and with a wear-reducing plastic layer, for. B. polyester powder coating, which is applied to the parallelogram side 14 in the embodiment shown here.
  • fastening grooves 17 and 18 are let in, which extend over the entire width of the milling frame 3.
  • a smoothing device 19 is fastened in the fastening grooves 17 and 18 and is inserted with its projections 20 into the fastening grooves 17 and 18.
  • the projections 20 are engaged behind by the fastening grooves 17 and 18, so that a further fastening of the smoothing device is not necessary.
  • the smoothing device 19 extends over the entire width of the milling cutter and is made of plastic. In the front area, it has a part 21 which is approximately triangular in shape and stiffened, and which is followed at the rear by a plate-shaped, more flexible part 22.
  • the front triangle side 29 of the rigid part 21, viewed in the direction of travel, is directed from the front parallelogram side 14 of the milling frame 3 towards the slopes and to the rear, the angle of inclination of the triangle side 29 to the horizontal being flatter than that of the front parallelogram side 14 of the milling frame 3 at the rear end of the triangular side 29, the plate-like flexible part 22 is fastened.
  • Another triangle side 30 extends from the front projection 20 to the rear end of the front triangle side 29. Between the two triangle sides 29 and 30 vertical stiffening ribs 31 are used, which are arranged parallel to each other in the direction of travel.
  • From the rear triangle side 30 also extend in the direction of travel and parallel to each other reinforcing ribs 32 on the top of the plate-shaped part 22 rearward to the end. These reinforcing ribs 32 connected to the plate-shaped part decrease in height from the rear triangular side 30 to the rear end of the plate-shaped part 22.
  • the first transverse row extends from the lower end of the front triangular side 29 of the rigid part 21 to the underside of a horizontal rigid web 36 attached between the rigid part 21 and the flexible part 22 of the smoothing device 19.
  • a second transverse row 34 with bead-shaped ribs 23 is provided on the underside of the flexible part 23 of the smoothing device 19.
  • a third transverse row 35 of ribs 23, which extends to the rear end of the flexible part 22, is also provided at a distance therefrom.
  • a fastening groove 26 is also incorporated in the region of the front edge 25, which extends over the entire width of the milling frame 3.
  • a cover profile made of a resilient plastic is attached, which extends in the extension of the parallelogram 24 seen in the direction of travel to the front and ends in an arc directed towards the slopes.
  • This cover profile like the smoothing device, can also be inserted into the fastening groove 26, which engages behind a projection 28 of the cover profile 27, so that a further fastening of the cover profile 27 is not necessary.
  • Two of the cover profiles 27 are provided side by side, one each extending from the gear unit to the lateral ends 5 and 6 of the milling frame 3.
  • the milling shafts 7 and 8 are inserted into the gear 4 on the one hand and into the side bearings 11 and 12 screwed to the lateral ends 5 and 6 of the milling frame 3 on the other hand.
  • FIG. 1 the components of the snow blower 1 are shown individually in plan view; they can also be seen in a side view. It can be seen particularly well that the snow blower 1 is constructed from only a very few parts which are very easy to replace. All wearing parts are attached to the central milling frame 3, so that depending on the wear of the snow blower, either the entire milling frame 3 is unscrewed from the supporting frame 2 and replaced by a new one, or only individual wearing parts are replaced.
  • the side bearings 11 and 12 are each fastened to a side plate 37.
  • a side plate 37 For the sake of simplicity, only the left side plate 37 is described here.
  • the right side plate is identical to the left side plate except that it is mirror-inverted.
  • hook strips 39 and 40 which are L-shaped in cross section and are L-shaped are attached.
  • the angle enclosed by the hook strips 39 and 40 is approximately equal to the angle formed by the upper parallelogram side 24 and the front parallelogram side 14 of the milling frame 3 is included.
  • the side plate 37 is adapted in this area approximately to the cross-sectional area of the milling frame 3. at the end opposite the two hook strips 39 and 40, the side plate 37 is bent towards the side facing away from the hook strips in the form of a tab 41.
  • a nut 42 is welded to the back of the tab 41. The axial direction of the nut 42 lies approximately in the bisector of the angle enclosed by the hook strips 39 and 40, more precisely on the diagonal of a parallelogram in this exemplary embodiment.
  • an end cover 43 is welded to the lateral ends 5 and 6 of the milling frame 3 and projects beyond the cross-sectional area of the milling frame to the outside. To put it more precisely, the end cover 43 projects beyond the milling frame 3 on its parallelogram side 24 and the front parallelogram side 14. On the other parallelogram sides, the end cover 43 does not project beyond the milling frame 3; on the underside of the parallelogram there are even recesses through which the fastening grooves 17 and 18 are attached the front and rear edges 15 and 16 remain accessible.
  • the protruding end cover 43 forms on the upper side 24 and the front parallelogram side 14 of the milling frame 3 webs 44 and 45.
  • the thickness of the two webs 44 and 45 is selected in accordance with the recesses in the L-profile of the hook strips 39 and 40 on the side plate 37. Contrary to the embodiment shown here, the webs and the hook strips do not have to be continuous, but can also be interrupted piece by piece.
  • an insertion pocket 46 which opens towards the upper front edge 25 is welded in the area of the rear edge 16 of the milling frame 3.
  • the insertion pocket 46 has a pocket base 47 and two flanks 48 and 49 protruding therefrom and running parallel to the adjacent parallelogram sides.
  • the insertion pocket 46 is closed off by a wall piece 50 on the side facing away from the milling frame 3.
  • An opening is provided in the pocket base 47, through which a retaining screw 51 extends.
  • the hook bars 39 and 40 engage behind the end cover 43 on its webs 44 and 45 when the side slider 37 is in the installed state of the pocket base 47 which extends through the holding screw 51, the nut 42 of the side plate 37 engages.
  • the milling frame 3 shown in FIG. 3 can be seen again in FIG. 5, but in a front view.
  • the milling frame 3 has a frame drop in such a way that the milling frame 3 is bent in the middle, while its lateral ends 5 and 6 are bent upwards by an amount a relative to the center of the frame.
  • Such a frame detonation can be produced in a hollow profile in a simple manner in that when extruding one side, here the side 24, is cooled faster than the other side, here the side 13.
  • FIGS. 6 to 8 show a further embodiment of the smoothing device 19, the ribs 23, as can be seen from the bottom view of FIG. 7, have a teardrop shape. All ribs 23 have in common that the drop shape tapers in the direction of travel, so that a pointed part 52 points in the direction of travel, while a wider part 53 adjoins the pointed part 52 against the direction of travel. Just like the ribs of the smoothing device 19 shown in FIG. 2, the drop-shaped ribs 23 also have a cam shape in cross section (compare FIG. 8).
  • the ribs 23 of the first transverse row 33 extend with their pointed part 52 over the entire front triangular side 29 of the rigid part 21 of the smoothing device 19.
  • the pointed part 52 ends at the front only below the front projection 20.
  • the relatively long extending pointed parts 52 of the front cams widen in the opposite direction so that the space remaining between the ribs 23 narrows.
  • the ribs 23 of the front transverse row 33 are made of wear-resistant material. While the entire smoothing device 19 can consist of polyurethane, the wear resistance of the ribs 23 of the first transverse row 33 can be achieved by adding corundum particles to the polyurethane there.
  • FIG. 9 Another possibility of the wear-resistant design of the ribs 23 of the front transverse row 33 is shown in FIG. 9.
  • the ribs 23 of the first transverse row 33 are made of a metal or a thermoset and are each with 4 fastening anchors 54 in the front triangular side 29 and the rigid web 36 poured the smoothing device 19.
  • FIG. 10 A further possibility of forming wear-resistant front ribs 23 is shown in FIG. 10.
  • the ribs 23 of the front transverse row 33 are covered with a spring steel plate 55.
  • the spring steel sheet 55 projects together with the front projection 20 into the front fastening groove 17 and becomes. held there positively by the front projection 20 and the fastening groove.
  • the spring steel sheet is screwed to the smoothing device 19 on the rigid web 36.
  • the spring steel sheet 55 can also be screwed in the area of the front triangle side 29 below the front projection 20. In this case it can be disregarded that the spring steel sheet 55 projects together with the front projection 20 into the fastening groove 17.
  • FIG. 11 A final example of the formation of wear-resistant front ribs 23 is shown in FIG. 11 poses.
  • a sliding plate 56 forms the front triangular side 29 of the rigid part 21.
  • the sliding plate 56 is wound in the front area to form a kind of clamping sleeve 57 which can be inserted into the front fastening groove 17 and which is held in the groove due to its inherent tension. Otherwise, the shape of the sliding plate 56 corresponds to that of the front triangular side 29 in the other exemplary embodiments.
  • the connection between the sliding plate 56 and the rest of the smoothing device 19 is accomplished by screwing in the area of the rigid web 36.
  • the remaining part of the smoothing device 19 is made of polyurethane, as in the other exemplary embodiments.
  • the assembly of the snow blower 1 is started first. First, the smoothing device 19 is pushed with its projections 20 into the fastening grooves 17 and 18 of the milling frame 3 until they are flush at the lateral ends 5 and 6 of the milling frame 3. Then you insert the milling shafts 7 and 8 in the gear 4. Then the side shields 37 are plugged with their side bearings 11 and 12 onto the outer ends 9 and 10 of the milling shafts 7 and 8 and pushed with their hook strips 39 and 40 over the webs 44 and 45 of an end cover 43 of the milling frame 3. The side plate 37 is pushed until the tab 41 engages with the nut 42 in the insertion pocket 46 so far that the retaining screw 51 can engage in the nut 42.
  • the snow blower 1 is disassembled in the reverse order.
  • the snow shredded by the milling shafts 7 and 8 is thrown against the front parallelogram side 14 of the milling frame 3 designed as an impact body. Since the parallelogram side 14 is coated with polyester powder, the snow easily slides downwards and is distributed in front of the front edge 15 of the milling frame 3. Because of the frame heel of the milling frame 3 shown in FIG. 5, the snow also flows off very well in the outer frame areas, without there being an edge wall formation of the milled snow at the lateral ends 5 and 6 of the milling frame 3.
  • the droplet shape of the ribs 23 of the front transverse row 33 also compresses the snow in the lateral direction.
  • the plate-like compliant part 22 with its second transverse row 34 and third transverse row 35 ensures a final smoothing even when the terrain is relatively hilly.
  • the foremost transverse row 23 of the ribs 23 is usually exposed to the greatest wear.
  • these ribs 23 are made of spring steel or have been made wear-resistant in some other way, a substantially uniform wear of the smoothing device 19 is achieved, even if the snow blower is deeply immersed in hard snow.
  • the smoothing device 19 does not necessarily have to be connected to a snow blower. It can also be attached to a so-called smoothing board.

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  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Soil Working Implements (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Shovels (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Road Repair (AREA)
  • Connection Of Plates (AREA)
  • Harvester Elements (AREA)

Abstract

The invention relates to a snow tiller for mounting on the rear of a track maintenance vehicle. The snow tiller comprises a tiller shaft and a tiller frame of at least triangular cross-section extending over the width of the snow tiller and having end plates for supporting the tiller shaft bolted to its lateral ends. In order to facilitate the maintenance of the snow tiller, the lateral ends of the tiller frame are provided with bars secured thereto in a V-shaped configuration. Secured to each end plate at its side facing towards the tiller frame is a pair of undercut bars in a V-shaped configuration for overlapping engagement with the bars on the tiller frame in the mounted state of the end plates. The undercut bars cooperate with a fixing bolt engaging the tiller frame to form an interlock clamp mounting arrangement.

Description

Die vorliegende Neuerung betrifft eine Schneefräse für den Heckanbau an einem Pistenfahrzeug, mit einer Fräswelle und einem im Querschnitt zumindest dreieckförmigen, sich über die Breite der Schneefräse erstreckenden Fräsrahmen, an dessen seitlichen Enden Seitenschilde mit Lagern für die Fräswelle angeschraubt sind.The present innovation relates to a snow blower for rear attachment to a snow groomer, with a milling shaft and a milling frame which is at least triangular in cross section and extends across the width of the snow blower, and has side plates with bearings for the milling shaft screwed onto its lateral ends.

Eine solche Schneefräse ist bereits aus dem DE-U 85 28 096 bekannt, welches auf die Anmelderin zurückgeht. Der dort gezeigte Fräsrahmen besitzt einen parallelogrammähnlichen Querschnitt, so daß jeweils zwei Fräsrahmenflächen im Querschnitt zwei Seiten einer Dreiecksform bilden.Such a snow blower is already known from DE-U 85 28 096, which goes back to the applicant. The milling frame shown there has a parallelogram-like cross-section, so that two milling-frame surfaces in cross-section form two sides of a triangular shape.

Bei der bekannten Schneefräse ist der Fräsrahmen als Zentralrahmen ausgebildet, in dessen Mitte ein Getriebe angebracht ist, das zwei seitlich mit dem Getriebe verbundene Fräsenwellen antreibt. Die Fräswellen sind mit ihren, dem Getriebe abgewandten Enden in Seitenlagern gehalten.In the known snow blower, the milling frame is designed as a central frame, in the middle of which a gear is attached which drives two cutter shafts connected to the side of the gear. The milling shafts are held in side bearings with their ends facing away from the gearbox.

Es ist Aufgabe der vorliegenden Neuerung, bekannte Schneefräsen in ihrer Handhabung, insbesondere in ihrer Wartungsfreudlichkeit noch weiter zu verbessern.It is the object of the present innovation to further improve known snow blowers in their handling, in particular in their ease of maintenance.

Diese Aufgabe wird dadurch gelöst, daß an den seitlichen Enden des Fräsrahmens in einer Querschnittsebene über zwei Rahmenflächen überstehende und V-förmig zueinander angeordnete Stege angebracht sind und daß auf der von dem Fräsrahmen zugewandten Seite des Seitenschildes zwei V-förmig zueinander angeordnete Hakenleisten befestigt sind, die die Stege des Fräsrahmens im angebrachten Zustand des Seitenschildes hintergreifen, wobei die Hakenleisten des Seitenschildes zusammen mit einer an dem Fräsrahmen angreifenden Halteschraube einen formschlüssigen Klemmverschluß bilden.This object is achieved in that at the lateral ends of the milling frame in a cross-sectional plane over two frame surfaces projecting and V-shaped mutually arranged webs are attached and in that two V-shaped mutually arranged hook strips are attached to the side of the side plate facing the milling frame, which engage behind the webs of the milling frame in the attached state of the side plate, the hook strips of the side plate forming a form-fitting clamp closure together with a retaining screw engaging on the milling frame.

Diese Lösung gewährleistet ein schnelles Anbauen und Abnehmen der Seitenschilde und somit der Lager für die Fräswelle. Durch die beiden V-förmigen, die Stege des Fräsrahmens hintergreifenden Hakenleisten des Seitenschildes ist stets die richtige Ausrichtung der seitlichen Lager für die Fräswelle gegeben. Ein weiterer Vorteil liegt darin, daß nunmehr lediglich eine Schraube pro Seitenschild gelöst und angeschraubt werden muß, was das Auswechseln verschlissener Fräswellen bedeutend beschleunigt. Es ist möglich, die Stege des Fräsrahmens nach außen über die Rahmenflächen überstehen zu lassen, wo sie dann von den Hakeleisten der Seitenschilde von außen übergriffen werden. Es ist dabei ebenso möglich, insbesondere wenn der Fräsrahmen als Hohlprofil ausgebildet ist, die Stege nach innen zu richten, so daß die Hakenleisten der Seitenschilde die Stege im Inneren des Fräsrahmens ergreifen. Wichtig ist in jedem Fall, daß die beiden Hakenleisten in etwa den gleichen Winkel aufweisen wie die beiden Stege, wobei allerdings auch die Stege wie die Hakenleisten durch jeweils einen Steg bzw. eine Hakenleiste gebildet sein können, die V-förmig umgebogen sind.This solution ensures that the side shields and thus the bearings for the milling shaft can be attached and removed quickly. The two V-shaped hook strips on the side plate, which engage behind the webs of the milling frame, ensure that the side bearings for the milling shaft are always correctly aligned. Another advantage is that now only one screw per side plate has to be loosened and screwed on, which significantly speeds up the replacement of worn milling shafts. It is possible to have the webs of the milling frame project outwards beyond the frame surfaces, where they are then overlapped from the outside by the hook strips of the side shields. It is also possible, particularly if the milling frame is designed as a hollow profile, to direct the webs inwards so that the hook strips of the side shields grip the webs in the interior of the milling frame. It is important in any case that the two hook strips have approximately the same angle as the two webs, although the webs, like the hook strips, can also be formed by a web or a hook strip, respectively, which are bent in a V-shape.

Ganz besonders leicht läßt sich das Auswechseln der Seitenbleiche bewerkstelligen, wenn die Achse der Halteschraube etwa in Richtung der Winkelhalbierenden der beiden Stege ausgerichtet ist. Dann braucht nämlich der Seitenschild zunächst nur so weit mit seinen Hakenleisten auf die Stege des Fräsrahmens aufgeschoben zu werden, bis die Schraube sowohl an dem Fräsrahmen wie auch an dem Seitenschild angreift. Durch weiteres Anziehen der Halteschraube ziehen sich die beiden V-förmigen Stege förmlich in die beiden V-förmigen Hakenleisten ein, wodurch einerseits der Seitenschild ausgerichtet und andererseits festgeklemmt wird.It is very easy to replace the side bleach when the axis of the retaining screw is aligned approximately in the direction of the bisector of the two webs. Then the side plate only needs to be pushed with its hook strips onto the webs of the milling frame until the screw engages both on the milling frame and on the side plate. By further tightening the retaining screw, the two V-shaped webs literally retract into the two V-shaped hook strips, which on the one hand aligns the side plate and on the other hand clamps it in place.

Gemäß einer bevorzugten Ausführungsform umgreifen die Hakenleisten bei angebrachtem Seitenschild die Stege von außen und ist die Schraube mit Abstand von den Fräsrahmenflächen an dem Fräsrahmen angebracht.According to a preferred embodiment, the hook strips grip the webs from the outside when the side plate is attached and the screw is attached to the milling frame at a distance from the milling frame surfaces.

Das Anbringen eines Seitenschildes wird weiter dadurch erleichtert, daß seitlich von dem Fräsrahmen eine sich zu den V-förmigen Stegen hin öffnende Einstecktasche für den Seitenschild angebracht ist, wobei die Halteschraube durch die Einstecktasche hindurch an dem Seitenschild angreift und als Zugschraube ausgebildet ist. Auf diese Weise wird bereits beim Aufstecken des Seitenschildes auf die Stege eine gewisse Ausrichtung erreicht, wobei eventuell auftretende Querkräfte durch die den Seitenschild führende Einstecktasche aufgenommen werden und die Halteschraube nicht belasten.The attachment of a side plate is further facilitated by the fact that an insert pocket for the side plate opening towards the V-shaped webs is attached to the side of the milling frame, the retaining screw engaging through the insert pocket on the side plate and being designed as a tension screw. In this way, a certain alignment is already achieved when the side plate is attached to the webs, any transverse forces that may arise are absorbed by the insert pocket guiding the side plate and do not strain the retaining screw.

Befindet sich die Einstecktasche auf der den Stegen gegenüberliegenden Seite des Fräsrahmens, so wird darüber hinaus eine besonders wirksame Arretierung des Seitenschildes erreicht.If the insertion pocket is located on the side of the milling frame opposite the webs, a particularly effective locking of the side plate is also achieved.

Besonders einfach können die Stege an dem Fräsrahmen dadurch ausgebildet werden, daß seitlich an dem Fräsrahmen eine ebenfalls dreieckförmiger Abschlußdeckel befestigt ist, der die Querschnittsfläche des Fräsrahmens überragt. Ein solcher Abschlußdeckel hat darüber hinaus noch den Vorteil, daß er einen als Hohlprofil ausgebildeten Fräsrahmen auch dann verschlossen hält, wenn die Seitenschilde abgenommen sind.The webs on the milling frame can be formed in a particularly simple manner in that a likewise triangular end cover, which projects beyond the cross-sectional area of the milling frame, is attached to the side of the milling frame. Such a cover also has the advantage that it keeps a milling frame designed as a hollow profile closed even when the side plates are removed.

Eine besonders gute Führung beim Aufschieben eines Seitenschildes läßt sich dadurch erreichen, daß an dem der Einstecktasche zugewandten Ende des Seitenschildes eine entsprechende Einstecklasche abgebogen ist, an welcher eine Mutter befestigt ist.Particularly good guidance when pushing on a side plate can be achieved in that at the end of the side plate facing the insertion pocket a corresponding insertion flap is bent, to which a nut is attached.

Die Zugänglichkeit der Halteschrauben der Seitenschilde wird dadurch verbessert, daß der Fräsrahmen als Prallkörper ausgebildet ist, und daß dessen seitliche Ränder jeweils von der Mitte des Fräsrahmens aus ansteigend ausgebildet sind. Bei abgenommener Schneefräse befindet sich der Fräsrahmen in einer bistabilen Lage, was dazu augenutzt werden kann, daß der Fräsrahmen zum Abnehmen der Seitenschilde so hingelegt wird, daß sein seitliches Ende, an dem gearbeitet wird, von dem Erdboden weg nach oben gerichtet ist. Darüber hinaus ergibt sich der entscheidende Vorteil, daß ein solch ausgebildeter Prallkörper zu einer besseren Schneeverteilung beiträgt und insbesondere die Randwallbildung an den seitlichen Rändern der Schneefräse verhindert.The accessibility of the retaining screws of the side shields is improved in that the milling frame is designed as an impact body and that its lateral edges are designed to rise from the center of the milling frame. When the snow blower is removed, the milling frame is in a bistable position, which can be used to place the milling frame for removing the side shields in such a way that its side end, which is being worked on, is directed upwards away from the ground. In addition, there is the decisive advantage that such an impact body contributes to better snow distribution and in particular prevents the formation of edge walls at the lateral edges of the snow blower.

Vorteilhaft ist auch, daß der Fräsrahmen eine der Piste zugewandte Früsrahmenfläche aufweist, an deren Kanten zwei Befestigungsnuten zur Aufnahme einer Glätteinrichtung eingearbeitet sind. Auf diese Weise läßt sich auch die Glätteinrichtung schnell und einfach auswechseln, indem sie einfach in die Befestigungsnuten eingeschoben wird. Eine seitliche Sicherung der Glätteinrichtung kann dadurch erreicht werden, daß die angebrachten Seitenschilde jeweils zumindest eine der Befestigungsnuten an den seitlichen Ende des Fräsrahmens von außen überdecken. Auf diese Weise kann auf eine gesonderte Arretierung für die Glätteinrichtung verzichtet werden.It is also advantageous that the milling frame has a milling frame surface facing the slope, at the edges of two fastening grooves are incorporated to accommodate a smoothing device. In this way, the smoothing device can be replaced quickly and easily by simply being inserted into the fastening grooves. Lateral securing of the smoothing device can be achieved in that the attached side shields each cover at least one of the fastening grooves on the lateral end of the milling frame from the outside. In this way, a separate locking for the smoothing device can be dispensed with.

Gemäß einer bevorzugten Ausführungsform ist die Glätteinrichtung mit einem vorderen, im Querschnitt dreieckartigen, an dem Fräsrahmen entlang einer ersten Dreieckseite befestigten Teil versehen, dessen zweite Dreieckseite von dem Fräsrahmen aus pisten- und heckwärts gerichtet als starre Verdichtungsfläche ausgebildet ist und an ihrem heckwärtigen Ende mit einem plattenförmigen, nachgiebigen Teil verbunden ist, wobei sich der nachgiebige Teil im unbelasteten Zustand etwa parallel zur zweiten Dreieckseite und im belasteten zustand etwa horizontal erstreckt, während eine dritte Dreieckseite als sich vom heckwärtigen Ende der zweiten Dreieckseite zum Querträger erstreckende Stütze ausgebildet ist.According to a preferred embodiment, the smoothing device is provided with a front part which is triangular in cross section and fastened to the milling frame along a first side of the triangle, the second triangular side of which is formed from the milling frame in the direction of the slopes and towards the rear as a rigid compression surface and at its rear end with one plate-shaped, resilient part is connected, the resilient part extends approximately parallel to the second triangle side in the unloaded state and approximately horizontally in the loaded state, while a third triangle side is designed as a support extending from the rear end of the second triangle side to the cross member.

Weiterhin bevorzugt ist, daß auf der der Piste zugewandten Seite der Glätteinrichtung mindestens eine Querreihe wulstförmiger, sich in Fahrtrichtung längserstreckender Rippen angebracht ist.It is further preferred that at least one transverse row of bead-shaped ribs extending in the direction of travel is attached to the side of the smoothing device facing the slope.

Außerdem ist bevorzugt, daß eine erste Querreihe von Rippen auf der Unterseite des Steges angebracht ist und sich bis auf die zweite vordere Dreiecksseite des steifen Teiles erstreckt. Eine solche Glätteinrichtung ist aus dem DE-GM 85 22 791 bekannt, die ebenfalls auf die Anmelderin zurückgeht.It is also preferred that a first transverse row of ribs is attached to the underside of the web and extends to the second front triangle side of the rigid part. Such a smoothing device is known from DE-GM 85 22 791, which also goes back to the applicant.

Die Wartungsfreundlichkeit der Schneefräse kann weiterhin dadurch erhöht werden, daß die erste Querreihe von Rippen aus einem harten, verschleißfesten Material ausgebildet ist.The ease of maintenance of the snow blower can be further increased in that the first transverse row of ribs is made of a hard, wear-resistant material.

Die in Fahrtrichtung dahinterliegenden Querreihen können aus weichem Material bestehen. Bevorzugt besteht die Glätteinrichtung aus Polyurethan.The transverse rows behind in the direction of travel can be made of soft material. The smoothing device preferably consists of polyurethane.

Die Verschließfestigkeit der ersten Querreihe läßt sich einfach dadurch erhöhen, daß in die Rippen der ersten Querreihe Korundpartikel eingegossen sind. Trotz dieser Maßnahme wird die Glätteinrichtung kaum schwerer, so daß das Auswechseln der Glätteinrichtung dadurch nicht erschwert wird.The wear resistance of the first transverse row can be increased simply by pouring corundum particles into the ribs of the first transverse row. Despite this measure, the smoothing device is hardly heavier, so that the replacement of the smoothing device is not made more difficult.

Gemäß einer anderen Ausführungsform sind die Rippen der ersten Querreihe zur Piste hin mit Federstahlblech abgedeckt. Dieses Blech kann relativ dünn gehalten werden, da die Rippen der ersten Querreihe dem Blech eine gewisse Formstabilität geben, so daß das Blech als lediglich verschleißmindernde Schicht aufgebracht werden kann. Das Federstahlblech kann zum einen an die Glätterinrichtung angeschraubt werden, zum anderen kann das Federstahlblech auch zusammen mit der Glätteinrichtung in die vordere Befestigungsnut des Fräsrahmens eingeschoben sein.According to another embodiment, the ribs of the first transverse row towards the slope are covered with spring steel sheet. This sheet can be kept relatively thin, since the ribs of the first transverse row give the sheet a certain dimensional stability, so that the sheet can be applied as a wear-reducing layer only. The spring steel sheet can on the one hand be screwed onto the smoothing device, and on the other hand the spring steel sheet can also be inserted together with the smoothing device into the front fastening groove of the milling frame.

Eine andere Möglichkeit besteht darin, daß das Federstahlblech allein die zweite, pisten- und heckwärts gerichtete Dreieckseite der Glätteinrichtung bildet und an seinem heckwärtigen Ende mit dem plattenförmigen, nachgiebigen Teil verbunden ist. Bei dieser Ausbildung der Glätteinrichtung läßt sich Material einsparen, was das Gewicht der Glätteinrichtung verringert und somit die Handhabbarkeit der Schneefräse beim Auswechseln der Glätteinrichtung verbessert.Another possibility is that the spring steel sheet alone forms the second, slope and rear triangular side of the smoothing device and is connected at its rear end to the plate-shaped, flexible part. This configuration of the smoothing device saves material, which reduces the weight of the smoothing device and thus improves the handling of the snow blower when the smoothing device is replaced.

Die Rippen der ersten Querreihe können auch als mit Befestigungsankern ausgerüstete Metallnocken ausgebildet sein, die mit ihren Befestigungsankem in die Glätteinrichtung eingegossen sind.The ribs of the first transverse row can also be designed as metal cams equipped with fastening anchors, which are cast into the smoothing device with their fastening anchors.

Verschleißmindernd und somit wartungsfreundlich wirkt es sich aus, daß die Rippen etwa tropfenförmig ausgebildet sind. Auf diese Weise wird dem Schnee relativ wenig Widerstand entgegengesetzt.It reduces wear and is therefore easy to maintain that the ribs are approximately teardrop-shaped. In this way, there is relatively little resistance to the snow.

Wenn die Rippen derart ausgebildet sind, daß ein spitzerer Teil in Fahrtrichtung zeigt und der anschließende Teil sich entgegen der Fahrtrichtung verbreitert, wird neben der Verschleißminderung auch eine zusätzliche Querverdichtung des Schnees bewirkt, was zu einer besonders gut präparierten Piste führt.If the ribs are designed in such a way that a more pointed part points in the direction of travel and the subsequent part widens against the direction of travel, an additional transverse compression of the snow is brought about in addition to the reduction in wear, which leads to a particularly well prepared slope.

Im folgenden werden Ausführungsbeispiele der Neuerung anhand einer Zeichnung näher erläutert.Exemplary embodiments of the innovation are explained in more detail below with the aid of a drawing.

Es zeigen:

  • Figur 1 eine Draufsicht auf die Schneefräse, wobei ein Teil der Schneefräse weggebrochen wurde,
  • Figur 2 eine Schnittansicht der neuerungsgemäßen Schneefräse entlang der Linie 11-11 aus Figur 1,
  • Figur 3 die neuerungsgemäße Schneefräse im zerlegten Zustand Seitenansicht und Draufsicht,
  • Figur 4 einen Teil der Schneefräse in Seitenansicht,
  • Figur 5 den ausgebauten Fräsrahmen der Schneefräse in einer Vorderansicht,
  • Figur 6 eine Seitenansicht der Glätteinrichtung,
  • Figur 7 eine Druntersicht eines Ausschnitts der Glätteinrichtung,
  • Figur 8 einen Schnitt durch die Glätteinrichtung aus Figur 7 entlang der Linie Vlll-Vlll,
  • Figur 9 eine Ausführungsform der Glätteinrichtung in einer Seitenansicht,
  • Figur 10 eine weitere Ausführungsform einer Glätteinrichtung in einer Seitenansicht und
  • Figur 11 in einer Seitenansicht noch eine Ausführungsform der Glätteinrichtung.
Show it:
  • FIG. 1 is a top view of the snow blower, with part of the snow blower broken away,
  • FIG. 2 shows a sectional view of the snow blower according to the innovation along the line 11-11 from FIG. 1,
  • FIG. 3 shows the snow blower according to the invention in the disassembled state, side view and top view,
  • FIG. 4 shows a part of the snow blower in a side view,
  • FIG. 5 shows the removed milling frame of the snow blower in a front view,
  • FIG. 6 shows a side view of the smoothing device,
  • FIG. 7 shows a bottom view of a section of the smoothing device,
  • FIG. 8 shows a section through the smoothing device from FIG. 7 along the line Vlll-Vlll,
  • FIG. 9 shows an embodiment of the smoothing device in a side view,
  • Figure 10 shows another embodiment of a smoothing device in a side view and
  • Figure 11 is a side view of another embodiment of the smoothing device.

Wie am besten aus der Fig. 1 zu ersehen ist, umfasst die Schneefräse 1 einen Tragrahmen 2 für den Heckanbau an ein nicht dargestelltes Pistenfahrzeug und einen an dem Tragrahmen 2 befestigten und sich über die gesamte Breite der Schneefräse erstreckenden Prallkörper 3.As can best be seen from FIG. 1, the snow blower 1 comprises a support frame 2 for rear attachment to a snow groomer (not shown) and an impact body 3 fastened to the support frame 2 and extending over the entire width of the snow blower.

Der Tragrahmen 2 ist gabelförmig ausgebildet und symmetrisch zur Mitte der Schneefräse 1 mit dem Prallkörper 3 verschraubt. Der Prallkörper 3 selbst ist als zentraler Fräsrahmen ausgebildet, an welchem modulartig die nachfolgenden Bauteile angebracht sind.The support frame 2 is fork-shaped and screwed symmetrically to the center of the snow blower 1 with the impact body 3. The impact body 3 itself is designed as a central milling frame, on which the following components are attached in a modular manner.

In der Mitte des Tragrahmens, bzw. des Prallkörpers 3 ist ein Getriebe 4 angeschraubt, welches zwei sich beidseitig von dem Getriebe 4 bis zu den seitlichen Enden 5 und 6 des Fräsrahmens 3 erstreckende Fräswellen 7 und 8 antreibt. Die äußeren Enden 9 und 10 der Fräswellen 7 und 8 werden in an den seitlichen Enden 5 und 6 des Fräsrahmens 3 befestigten Seitenlagern 11 und 12 gehalten.In the middle of the support frame or the impact body 3, a gear 4 is screwed, which drives two milling shafts 7 and 8 extending on both sides from the gear 4 to the lateral ends 5 and 6 of the milling frame 3. The outer Ren ends 9 and 10 of the milling shafts 7 and 8 are held in side bearings 11 and 12 attached to the lateral ends 5 and 6 of the milling frame 3.

Wie besser aus der Fig. 2 ersichtlich ist, besteht der Fräsrahmen 3 aus einem parallelogrammförmigen Hohlkörper, der beispielsweise durch Strangpressen aus Aluminium hergestellt werden kann. Eine untere Parallelogrammseite 13 des Fräsrahmens 3 ist der Piste zugewandt und etwa parallel dazu ausgerichtet. An die Parallelogrammseite 13 schließt sich in Fahrtrichtung gesehen nach vorne eine zweite Parallelogrammseite 14 an, welche schräg nach oben ansteigt.As can be seen more clearly from FIG. 2, the milling frame 3 consists of a parallelogram-shaped hollow body which can be produced, for example, from aluminum by extrusion. A lower parallelogram side 13 of the milling frame 3 faces the slope and is aligned approximately parallel to it. When viewed in the direction of travel, the parallelogram side 13 is followed by a second parallelogram side 14, which rises obliquely upwards.

Diese Parallelogrammseite ist als Prallfläche ausgebildet und mit einer verschleißmindernden Kunststoffschicht, z. B. Polyesterpulverbeschichtung, versehen, welche bei dem hier gezeigten Ausführungsbeispiel auf die Parallelogrammseite 14 aufgebracht ist.This parallelogram side is designed as an impact surface and with a wear-reducing plastic layer, for. B. polyester powder coating, which is applied to the parallelogram side 14 in the embodiment shown here.

Im Bereich der vorderen Kante 15 und der hinteren Kante 16 der ersten Parallelogrammseite 13 sind Befestigungsnuten 17 und 18 eingelassen, welche sich über die gesamte Breite des Fräsrahmens 3 erstrecken.In the area of the front edge 15 and the rear edge 16 of the first parallelogram side 13, fastening grooves 17 and 18 are let in, which extend over the entire width of the milling frame 3.

In den Befestigungsnuten 17 und 18 ist eine Glätteinrichtung 19 befestigt, welche mit ihren Vorsprüngen 20 in die Befestigungsnuten 17 und 18 eingeschoben ist. Die Vorsprünge 20 werden dabei von den Befestigungsnuten 17 und 18 hintergriffen, so daß eine weitere Befestigung der Glätteinrichtung nicht notwendig ist. Die Glätteinrichtung 19 erstreckt sich über die gesamte Breite der Fräse und besteht aus Kunststoff. Sie weist im vorderen Bereich einen im Querschnitt etwa dreiecksförmigen ausgesteiften Teil 21 auf, and den sich heckwärts ein plattenförmiger nachgiebigerer Teil 22 anschließt.A smoothing device 19 is fastened in the fastening grooves 17 and 18 and is inserted with its projections 20 into the fastening grooves 17 and 18. The projections 20 are engaged behind by the fastening grooves 17 and 18, so that a further fastening of the smoothing device is not necessary. The smoothing device 19 extends over the entire width of the milling cutter and is made of plastic. In the front area, it has a part 21 which is approximately triangular in shape and stiffened, and which is followed at the rear by a plate-shaped, more flexible part 22.

Die in Fahrtrichtung gesehen vordere Dreiecksseite 29 des steifen Teiles 21 ist von der vorderen Parallelogrammseite 14 des Fräsrahmens 3 aus pisten- und heckwärts gerichtet, wobei der Neigungswinkel der Dreiecksseite 29 zur Horizontalen gesehen flacher ist als der der vorderen Parallelogrammseite 14 des Fräsrahmens 3. An dem heckwärtigen Ende der Dreiecksseite 29 ist der plattenförmige nachgiebige Teil 22 befestigt. Eine weitere Dreiecksseite 30 erstreckt sich von dem vorderen Vorsprung 20 aus bis zum heckwärtigen Ende der vorderen Dreiecksseite 29. Zwischen den beiden Dreiecksseiten 29 und 30 sind vertikale, in Fahrtrichtung parallel zueinander angeordnete Versteifungsrippen 31 eingesetzt.The front triangle side 29 of the rigid part 21, viewed in the direction of travel, is directed from the front parallelogram side 14 of the milling frame 3 towards the slopes and to the rear, the angle of inclination of the triangle side 29 to the horizontal being flatter than that of the front parallelogram side 14 of the milling frame 3 at the rear end of the triangular side 29, the plate-like flexible part 22 is fastened. Another triangle side 30 extends from the front projection 20 to the rear end of the front triangle side 29. Between the two triangle sides 29 and 30 vertical stiffening ribs 31 are used, which are arranged parallel to each other in the direction of travel.

Von der hinteren Dreiecksseite 30 aus erstrecken sich ebenfalls in Fahrtrichtung und parallel zueinander angeordnete Verstärkungsrippen 32 auf der Oberseite des plattenförmigen Teiles 22 heckwärts bis zu dessen Ende. Diese mit dem plattenförmigen Teil verbundenen Verstärkungsrippen 32 nehmen in ihrer Höhe von der hinteren Dreiecksseite 30 bis zum heckwärtigen Ende des plattenförmigen Teiles 22 ab.From the rear triangle side 30 also extend in the direction of travel and parallel to each other reinforcing ribs 32 on the top of the plate-shaped part 22 rearward to the end. These reinforcing ribs 32 connected to the plate-shaped part decrease in height from the rear triangular side 30 to the rear end of the plate-shaped part 22.

Auf der der Piste B zugewandten Seite der Glätteinrichtung sind in Fahrtrichtung hintereinanderliegend drei Querreihen 33, 34, 35 wulstförmiger, sich in Fahrtrichtung A längserstreckender Rippen 23 angebracht. Die erste Querreihe erstreckt sich von dem unteren Ende der vorderen Dreiecksseite 29 des steifen Teiles 21 aus bis zur Unterseite eines zwischen dem steifen Teil 21 und dem nachgiebigen Teil 22 der Glätteinrichtung 19 angebrachten horizontalen steifen Steges 36.On the side of the smoothing device facing slope B, three transverse rows 33, 34, 35 of bead-like ribs 23 extending in the direction of travel A are arranged one behind the other in the direction of travel. The first transverse row extends from the lower end of the front triangular side 29 of the rigid part 21 to the underside of a horizontal rigid web 36 attached between the rigid part 21 and the flexible part 22 of the smoothing device 19.

Mit Abstand an die erste Querreihe 33 anschließend ist auf der Unterseite des nachgiebigen Teiles 23 der Glätteinrichtung 19 eine zweite Querreihe 34 mit wulstförmigen Rippen 23 vorgesehen. Daran ebenfalls mit Abstand anschließend ist eine dritte Querreihe 35 von Rippen 23 vorgesehen, welche sich bis zum heckwärtigen Ende des nachgiebigen Teiles 22 erstreckt.At a distance from the first transverse row 33, a second transverse row 34 with bead-shaped ribs 23 is provided on the underside of the flexible part 23 of the smoothing device 19. A third transverse row 35 of ribs 23, which extends to the rear end of the flexible part 22, is also provided at a distance therefrom.

Auf der der Parallelogrammseite 13 gegenüberliegenden, oberen Seite 24 des Fräsrahmens 3 ist im Bereich der vorderen Kante 25 ebenfalls eine Befestigungsnut 26 eingearbeitet, welche sich über die gesamte Breite des Fräsrahmens 3 erstreckt. In der Befestigungsnut 26 ist ein Abdeckprofil aus einem nachgiebigen Kunststoff befestigt, das sich in Verlängerung der Parallelogramm seite 24 in Fahrtrichtung gesehen nach vorne erstreckt und in einem pistenwärts gerichteten Bogen endet. Auch dieses Abdeckprofil kann ebenso wie die Glätteinrichtung in die Befestigungsnut 26 eingeschoben werden, welche einen Vorsprung 28 des Abdeckprofiles 27 hintergreift, so daß eine weitere Befestigung des Abdeckprofiles 27 nicht notwendig ist. Von den Abdeckprofilen 27 sind zwei nebeneinander vorgesehen, wobei sich jeweils eines von dem Getriebe aus bis zu den seitlichen Enden 5 bzw. 6 des Fräsrahmens 3 erstreckt.On the upper side 24 of the milling frame 3 opposite the parallelogram side 13, a fastening groove 26 is also incorporated in the region of the front edge 25, which extends over the entire width of the milling frame 3. In the mounting groove 26, a cover profile made of a resilient plastic is attached, which extends in the extension of the parallelogram 24 seen in the direction of travel to the front and ends in an arc directed towards the slopes. This cover profile, like the smoothing device, can also be inserted into the fastening groove 26, which engages behind a projection 28 of the cover profile 27, so that a further fastening of the cover profile 27 is not necessary. Two of the cover profiles 27 are provided side by side, one each extending from the gear unit to the lateral ends 5 and 6 of the milling frame 3.

Die Fräswellen 7 und 8 sind einerseits in das Getriebe 4 und andererseits in die an den seitlichen Enden 5 und 6 des Fräsrahmens 3 angeschraubten Seitenlager 11 und 12 eingesteckt. Dies ist aus der Fig. 1 zu ersehen. In der Fig. 3 sind zum einen die Bauteile der Schneefräse 1 in der Draufsicht einzeln dargestellt; daneben sind sie auch noch in einer Seitenansicht zu erkennen. Besonders gut zu ersehen ist, daß die Schneefräse 1 aus nur sehr wenigen Teilen aufgebaut ist, die sehr leicht austauschbar sind. Sämtliche Verschleißteile sind an dem zentralen Fräsrahmen 3 angebracht, so daß je nach Verschleiß der Schneefräse entweder der gesamte Fräsrahmen 3 von dem Tragrahmen 2 abgeschraubt wird und durch einen neuen ersetzt wird, oder lediglich einzelne Verschleißteile ausgewechselt werden.The milling shafts 7 and 8 are inserted into the gear 4 on the one hand and into the side bearings 11 and 12 screwed to the lateral ends 5 and 6 of the milling frame 3 on the other hand. This can be seen from FIG. 1. 3, the components of the snow blower 1 are shown individually in plan view; they can also be seen in a side view. It can be seen particularly well that the snow blower 1 is constructed from only a very few parts which are very easy to replace. All wearing parts are attached to the central milling frame 3, so that depending on the wear of the snow blower, either the entire milling frame 3 is unscrewed from the supporting frame 2 and replaced by a new one, or only individual wearing parts are replaced.

Wie auch aus der Figur 3, besser aber aus der Figur 4 ersichtlich ist, sind die Seitenlager 11 und 12 jeweils an einem Seitenschild 37 befestigt. Der Einfachheit halber wird an dieser Stelle nur der linke Seitenschild 37 beschrieben. Der rechte Seitenschild ist aber bis auf den Umstand, daß er spiegelverkehrt ist, mit dem linken Seitenschild identisch.As can also be seen from FIG. 3, but better from FIG. 4, the side bearings 11 and 12 are each fastened to a side plate 37. For the sake of simplicity, only the left side plate 37 is described here. The right side plate is identical to the left side plate except that it is mirror-inverted.

Auf der dem Fräsrahmen 3 zugewandten Seite 38 des Seitenschildes 37 sind V-förmig zueinander stehende, im Querschnitt L-förmige Hakenleisten 39 und 40 angebracht. Bei dem hier gezeigten Ausführungsbeispiel ist der von den Hakenleisten 39 und 40 eingeschlossene Winkel in etwa gleich dem Winkel, der durch die obere Parallelogrammseite 24 und die vordere Parallelogrammseite 14 des Fräsrahmens 3 eingeschlossen ist.On the side 38 of the side plate 37 facing the milling frame 3, hook strips 39 and 40 which are L-shaped in cross section and are L-shaped are attached. In the exemplary embodiment shown here, the angle enclosed by the hook strips 39 and 40 is approximately equal to the angle formed by the upper parallelogram side 24 and the front parallelogram side 14 of the milling frame 3 is included.

Der Seitenschild 37 ist in diesem Bereich etwa der Querschnittsfläche des Fräsrahmens 3 angepaßt. an dem den beiden Hakenleisten 39 und 40 gegenüberliegenden Ende ist der Seitenschild 37 zur den Hakenleisten abgewandten Seite hin in Form einer Lasche 41 abgebogen. Auf der Rückseite der Lasche 41 ist eine Mutter 42 angeschweißt. Die Achsrichtung der Mutter 42 liegt etwa in der Winkelhalbierenden des von den Hakeleisten 39 und 40 eingeschlossenen Winkels, bei diesem Ausführungsbeispiel genauer auf der Diagonalen eines Parallelogrammes.The side plate 37 is adapted in this area approximately to the cross-sectional area of the milling frame 3. at the end opposite the two hook strips 39 and 40, the side plate 37 is bent towards the side facing away from the hook strips in the form of a tab 41. A nut 42 is welded to the back of the tab 41. The axial direction of the nut 42 lies approximately in the bisector of the angle enclosed by the hook strips 39 and 40, more precisely on the diagonal of a parallelogram in this exemplary embodiment.

Wie aus der Figur 3 ersichtlich ist, ist an den seitlichen Enden 5 und 6 des Fräsrahmens 3 jeweils ein Abschlußdeckel 43 angeschweißt, der die Querschnittsfläche des Fräsrahmens nach außen überragt. Genauer ausgedrückt überragt der Abschlußdeckel 43 den Fräsrahmen 3 an seiner Parallelogrammseite 24 und der vorderen Parallelogrammseite 14. An den anderen Parallelogrammseiten überragt der Abschlußdeckel 43 den Fräsrahmen 3 nicht, an der Unterseite des Parallelogrammes sind sogar Ausnehmungen vorgeshen, durch die die Befestigungsnuten 17 und 18 an der vorderen bzw. hinteren Kante 15 bzw. 16 zugänglich bleiben.As can be seen from FIG. 3, an end cover 43 is welded to the lateral ends 5 and 6 of the milling frame 3 and projects beyond the cross-sectional area of the milling frame to the outside. To put it more precisely, the end cover 43 projects beyond the milling frame 3 on its parallelogram side 24 and the front parallelogram side 14. On the other parallelogram sides, the end cover 43 does not project beyond the milling frame 3; on the underside of the parallelogram there are even recesses through which the fastening grooves 17 and 18 are attached the front and rear edges 15 and 16 remain accessible.

Der überstehende Abschlußdeckel 43 bildet an der oberen Seite 24 und der vorderen Parallelogrammseite 14 des Fräsrahmens 3 Stege 44 und 45 aus. Die Dicke der beiden Stege 44 und 45 ist entsprechend den Ausnehmungen des L-Profils der Hakenleisten 39 und 40 an dem Seitenschild 37 gewählt. Entgegen dem hier gezeigten Ausführungsbeispiel müssen die Stege und die Hakenleisten nicht durchgängig ausgebildet sein, sondern können auch stückweise unterbrochen sein.The protruding end cover 43 forms on the upper side 24 and the front parallelogram side 14 of the milling frame 3 webs 44 and 45. The thickness of the two webs 44 and 45 is selected in accordance with the recesses in the L-profile of the hook strips 39 and 40 on the side plate 37. Contrary to the embodiment shown here, the webs and the hook strips do not have to be continuous, but can also be interrupted piece by piece.

Auf der von dem Fräsrahmen abgewandten Seite des Abschlußdeckels 43 ist im Bereich der hinteren Kante 16 des Fräsrahmens 3 eine sich zur oberen vorderen Kante 25 hin öffnende Einstecktasche 46 aufgeschweißt. Die Einstecktasche 46 besitzt einen Taschengrund 47 und zwei davon abstehende, parallel zu den angrenzenden Parallelogrammseiten verlaufende Flanken 48 und 49. Zur dem Fräsrahmen 3 abgewandten Seite ist die Einstecktasche 46 durch ein Wandstück 50 abgeschlossen.On the side of the end cover 43 facing away from the milling frame, an insertion pocket 46 which opens towards the upper front edge 25 is welded in the area of the rear edge 16 of the milling frame 3. The insertion pocket 46 has a pocket base 47 and two flanks 48 and 49 protruding therefrom and running parallel to the adjacent parallelogram sides. The insertion pocket 46 is closed off by a wall piece 50 on the side facing away from the milling frame 3.

In dem Taschengrund 47 ist eine Öffnung vorgesehen, durch die eine Halteschraube 51 hindurchgreift.An opening is provided in the pocket base 47, through which a retaining screw 51 extends.

Wie besser aus der figur 4 ersichtlich ist, hintergreifen die-Hakenieisten 39 und 40 bei angebautem Zustand des Seitenschlides 37 den Abschlußdeckel 43 an seinen Stegen 44 und 45. die Lasche 41 mit der Mutter 42 steckt in der Einstecktasche 46, wobei die durch die Öffnung des Taschengrundes 47 sich hindurcherstreckende Halteschraube 51 die Mutter 42 des Seitenschildes 37 eingreift.As can be seen better from FIG. 4, the hook bars 39 and 40 engage behind the end cover 43 on its webs 44 and 45 when the side slider 37 is in the installed state of the pocket base 47 which extends through the holding screw 51, the nut 42 of the side plate 37 engages.

Zwischen dem Ende der Lasche 41 und dem Taschengrund 47 der Einstecktasche 46 verbleibt ein gewisser Abstand, so daß durch Anziehen der Halteschraube 51 der Klemmsitz zwischen den Stegen 44 bzw. 45 und den Hakenleisten 39 bzw. 40 verstärkt werden kann.A certain distance remains between the end of the tab 41 and the pocket base 47 of the insertion pocket 46, so that the clamping fit between the webs 44 and 45 and the hook strips 39 and 40 can be reinforced by tightening the retaining screw 51.

Der in Figur 3 dargestellte Fräsrahmen 3 ist nochmals in der Figur 5, allerdings in einer Vorderansicht zu sehen. Wie deutlich zu erkennen ist, weist der Fräsrahmen 3 eine Rahmensprengung derart auf, daß der Fräsrahman 3 in seiner Mitte durchgebogen ist, während seine seitlichen Enden 5 bzw. 6 um einen Betrag a gegenüber der Rahmenmitte nach oben gebogen sind. Eine solche Rahmensprengung läßt sich bei einem Hohlprofil auf einfache Weise dadurch herstellen, daß beim Exdrudieren eine Seite, hier die Seite 24, schneller abgekühlt wird als die andere Seite, hier die Seite 13.The milling frame 3 shown in FIG. 3 can be seen again in FIG. 5, but in a front view. As can be clearly seen, the milling frame 3 has a frame drop in such a way that the milling frame 3 is bent in the middle, while its lateral ends 5 and 6 are bent upwards by an amount a relative to the center of the frame. Such a frame detonation can be produced in a hollow profile in a simple manner in that when extruding one side, here the side 24, is cooled faster than the other side, here the side 13.

Die Figuren 6 bis 8 zeigen eine weitere Ausführungsform der Glätteinrichtung 19, wobei die Rippen 23, wie gut aus der Druntersicht der Figur 7 erseichtlich ist, eine Tropfenform aufweisen. Allen Rippen 23 ist gemein, daß sich die Tropfenform in Fahrtrichtung verjüngt, so daß ein spitzer Teil 52 in Fahrtrichtung zeigt, während sich entgegen der Fahrtrichtung an den spitzen Teil 52 ein breiterer Teil 53 anschließt. Ebenso wie die Rippen der in Figur 2 gezeigten Glätteinrichtung 19 weisen auch die tropfenförmigen Rippen 23 im Querschnitt eine Nokkenform auf (vergleiche Figur 8).FIGS. 6 to 8 show a further embodiment of the smoothing device 19, the ribs 23, as can be seen from the bottom view of FIG. 7, have a teardrop shape. All ribs 23 have in common that the drop shape tapers in the direction of travel, so that a pointed part 52 points in the direction of travel, while a wider part 53 adjoins the pointed part 52 against the direction of travel. Just like the ribs of the smoothing device 19 shown in FIG. 2, the drop-shaped ribs 23 also have a cam shape in cross section (compare FIG. 8).

Die Rippen 23 der ersten Querreihe 33 erstrecken sich mit ihrem spitzen Teil 52 über die gesamte vordere Dreiecksseite 29 des steifen Teiles 21 der Glätteinrichtung 19. Der spitze Teil 52 endet frontseitig erst etwa unterhalb des vorderen Vorsprungs 20. Die sich so relativ lang erstreckenden spitzen Teile 52 der vorderen Nocken verbreitern sich in der Weise entgegen der Fahrtrichtung, daß der zwischen den Rippen 23 verbleibende Zwischenraum enger wird.The ribs 23 of the first transverse row 33 extend with their pointed part 52 over the entire front triangular side 29 of the rigid part 21 of the smoothing device 19. The pointed part 52 ends at the front only below the front projection 20. The relatively long extending pointed parts 52 of the front cams widen in the opposite direction so that the space remaining between the ribs 23 narrows.

Die Rippen 23 der vorderen Querreihe 33 sind aus verschleißfestem Material ausgebildet. Während die gesamte Glätteinrichtung 19 aus Polyurethan bestehen kann, läßt sich die Verschleißfestigkeit der Rippen 23 der ersten Querreihe 33 dadurch erreichen, daß dort dem Polyurethan Korundpartikel beigemischt werden.The ribs 23 of the front transverse row 33 are made of wear-resistant material. While the entire smoothing device 19 can consist of polyurethane, the wear resistance of the ribs 23 of the first transverse row 33 can be achieved by adding corundum particles to the polyurethane there.

Eine andere Möglichkeit der verschleißfesten Ausbildung der Rippen 23 dser vorderen Querreihe 33 zeigt die Figur 9. Die Rippen 23 der ersten Querreihe 33 bestehen dort aus einem Metall oder einem Duroplast und sind mit jeweils 4 Befestigungsankern 54 in die vordere Dreiecksseite 29 und den steifen Steg 36 der Glätteinrichtung 19 eingegossen.Another possibility of the wear-resistant design of the ribs 23 of the front transverse row 33 is shown in FIG. 9. The ribs 23 of the first transverse row 33 are made of a metal or a thermoset and are each with 4 fastening anchors 54 in the front triangular side 29 and the rigid web 36 poured the smoothing device 19.

Eine weitere Möglichkeit der Ausbildung verschleißfester vorderer Rippen 23 zeigt die Figur 10. Dort sind die Rippen 23 der vorderen Querreihe 33 mit einem Federstahlbelch 55 überzogen. Das Federstahlblech 55 ragt zusammen mit dem vorderen Vorsprung 20 in die vordere Befestigungsnut 17 hinein und wird. dort formschlüssig von dem vorderen Vorsprung 20 und der Befestigungsnut gehalten. An dem steifen Steg 36 ist das Federstahlblech an der Glätteinrichtung 19 festgeschraubt. Das Federstahlblech 55 kann auch im Bereich der vorderen Dreiecksseite 29 unterhalb des vorderen Vorsprungs 20 festgeschraubt sein. In diesem Fall kann davon abgesehen werden, daß das Federstahlblech 55 mit dem vorderen Vorsprung 20 zusammen in die Befestigungsnut 17 hineinragt.A further possibility of forming wear-resistant front ribs 23 is shown in FIG. 10. There, the ribs 23 of the front transverse row 33 are covered with a spring steel plate 55. The spring steel sheet 55 projects together with the front projection 20 into the front fastening groove 17 and becomes. held there positively by the front projection 20 and the fastening groove. The spring steel sheet is screwed to the smoothing device 19 on the rigid web 36. The spring steel sheet 55 can also be screwed in the area of the front triangle side 29 below the front projection 20. In this case it can be disregarded that the spring steel sheet 55 projects together with the front projection 20 into the fastening groove 17.

Ein letztes Beispiel zur Ausbildung verschleißfester vorderer Rippen 23 ist in der Figur 11 dargestellt. Bei diesem Ausführungsbeispiel bildet ein Gleitblech 56 die vordere Dreiecksseite 29 des steifen Teiles 21. Das Gleitblech 56 ist im vorderen Bereich zu einer Art Spannhülse 57 aufgewickelt, die in die vordere Befestigungsnut 17 eingeschoben werden kann und sich aufgrund ihrer Eigenspannung in der Nut hält. Ansonsten entspricht die Form des Gleitbleches 56 der der vorderen Dreiecksseite 29 bei den anderen Ausführungsbeispielen. Die Verbindung zwischen dem Gleitblech 56 und der übrigen Glätteinrichtung 19 wird durch Verschrauben im Bereich des steifen Steges 36 bewerkstelligt. Der übrige Teil der Glätteinrichtung 19 besteht ebenso wie bei den anderen Ausführungsbeispielen aus Polyurethan.A final example of the formation of wear-resistant front ribs 23 is shown in FIG. 11 poses. In this embodiment, a sliding plate 56 forms the front triangular side 29 of the rigid part 21. The sliding plate 56 is wound in the front area to form a kind of clamping sleeve 57 which can be inserted into the front fastening groove 17 and which is held in the groove due to its inherent tension. Otherwise, the shape of the sliding plate 56 corresponds to that of the front triangular side 29 in the other exemplary embodiments. The connection between the sliding plate 56 and the rest of the smoothing device 19 is accomplished by screwing in the area of the rigid web 36. The remaining part of the smoothing device 19 is made of polyurethane, as in the other exemplary embodiments.

Im folgenden wird die Wirkungsweise der Neuerung kurz erläutert.The mode of operation of the innovation is briefly explained below.

Zunächst wird mit dem Zusammenbau der Schneefräse 1 begonnen. Als erstes schiebt man die Glätteinrichtung 19 mit ihren Vorsprüngen 20 in die Befestigungsnuten 17 und 18 des Fräsrahmens 3 hinein, bis sie an den seitlichen enden 5 und 6 des Fräsrahmens 3 bundig abschließen. Dann steckt man die Fräswellen 7 und 8 in das Getriebe 4 ein. Anschließend werden die Seitenschilde 37 mit ihren Seitenlagern 11 bzw. 12 auf die äu ßeren Enden 9 bzw. 10 der Fräswellen 7 bzw. 8 aufgesteckt und mit ihren Hakenleisten 39 und 40 über die Stege 44 und 45 eines Abschlußdeckels 43 des Fräsrahmens 3 geschoben. Der Seitenschild 37 wird so weit geschoben, bis die Lasche 41 mit der Mutter 42 in die Einstecktasche 46 so weit eingreift, daß die Halteschraube 51 in die Mutter 42 eingreifen kann.The assembly of the snow blower 1 is started first. First, the smoothing device 19 is pushed with its projections 20 into the fastening grooves 17 and 18 of the milling frame 3 until they are flush at the lateral ends 5 and 6 of the milling frame 3. Then you insert the milling shafts 7 and 8 in the gear 4. Then the side shields 37 are plugged with their side bearings 11 and 12 onto the outer ends 9 and 10 of the milling shafts 7 and 8 and pushed with their hook strips 39 and 40 over the webs 44 and 45 of an end cover 43 of the milling frame 3. The side plate 37 is pushed until the tab 41 engages with the nut 42 in the insertion pocket 46 so far that the retaining screw 51 can engage in the nut 42.

Danach braucht die Halteschraube 51 nur noch angezogen zu werden, wobei sich der jeweilige Seitenschild 37 automatisch ausrichtet und arretiert.Thereafter, the retaining screw 51 only needs to be tightened, the respective side plate 37 automatically aligning and locking.

Wie aus der Figur 4 ersichtlich ist, schiebt sich bei diesem Vorgang der Seitenschild 37 über die vordere Befestigungsnut 17, so daß die Glätteinrichtung 19 ebenfalls durch den Seitenschild 37 gehalten und am seitlichen Herausrutschen gehindert ist.As can be seen from FIG. 4, during this process the side plate 37 slides over the front fastening groove 17, so that the smoothing device 19 is also held by the side plate 37 and is prevented from slipping out laterally.

Das Auseinanderbauen der Schneefräse 1 geschieht in umgekehrter Reihenfolge.The snow blower 1 is disassembled in the reverse order.

Im folgenden wird die Schneefräse 1 im Betrieb erläutert.In the following, the snow blower 1 is explained in operation.

Der von den Fräswellen 7 und 8 zerkleinerte Schnee wird gegen die vordere Parallelogrammseite 14 des als Prallkörpers ausgebildeten Fräsrahmens 3 geworfen. Da die Parallelogrammseite 14 mit Polyesterpulver beschichtet ist, gleitet der Schnee problemlos nach unten ab und verteilt sich vor der vorderen Kante 15 des Fräsrahmens 3. Durch die aus Figur 5 ersichtliche Rahmensprengung des Fräsrahmens 3 fließt der Schnee auch in den äußeren Rahmenbereichen sehr gut ab, ohne daß sich an den seitlichen Enden 5 bzw. 6 des Fräsrahmens 3 eine Randwallbildung des gefrästen Schnees ergeben würde.The snow shredded by the milling shafts 7 and 8 is thrown against the front parallelogram side 14 of the milling frame 3 designed as an impact body. Since the parallelogram side 14 is coated with polyester powder, the snow easily slides downwards and is distributed in front of the front edge 15 of the milling frame 3. Because of the frame heel of the milling frame 3 shown in FIG. 5, the snow also flows off very well in the outer frame areas, without there being an edge wall formation of the milled snow at the lateral ends 5 and 6 of the milling frame 3.

Der Schnee gelangt nun an den steifen vorderen Teil 21, genauer an die vordere Dreiecksseite 29 und wird durch diese nach unten verdichtet. Gleichzeitig wird aber durch die Tropfenform der Rippen 23 der vorderen Querreihe 33 auch eine Verdichtung des Schnees in seitlicher Richtung erreicht. Der plattenförmige nachgiebige Teil 22 mit seiner zweiten Querreihe 34 und dritten Querreihe 35 sorgt für eine abschließende Glättung auch dann noch, wenn das Gelände relativ hügelig ist. Die vorderste Querreihe 23 der Rippen 23 ist in der Regel dem größten Verschleiß ausgesetzt. Da aber diese Rippen 23 aus Federstahl hergestellt sind, oder auf anderem Wege verschleißfest gemacht wurden, wird eine im wesentlichen gleichmäßige Abnutzung der Glätteinrichtung 19 erreicht, und zwar auch dann, wenn die Schneefräse bei hartem Schnee tief eingetaucht wird.The snow now arrives at the stiff front part 21, more precisely at the front triangle side 29 and is compressed downwards by this. At the same time, however, the droplet shape of the ribs 23 of the front transverse row 33 also compresses the snow in the lateral direction. The plate-like compliant part 22 with its second transverse row 34 and third transverse row 35 ensures a final smoothing even when the terrain is relatively hilly. The foremost transverse row 23 of the ribs 23 is usually exposed to the greatest wear. However, since these ribs 23 are made of spring steel or have been made wear-resistant in some other way, a substantially uniform wear of the smoothing device 19 is achieved, even if the snow blower is deeply immersed in hard snow.

Die Glätteinrichtung 19 muß nicht unbedingt notwendigerweise an eine Schneefräse angeschlossen werden. Sie kann auch an einem sogenannten Glättebrett befestigt werden.The smoothing device 19 does not necessarily have to be connected to a snow blower. It can also be attached to a so-called smoothing board.

Claims (23)

1. Snow-compacting roller (1) for attachment to the rear of a tracking vehicle with a roller shaft (7, 8) and a roller frame (3), which is cross-selectional- ly at least triangular in shape and extends over the width of the snow-compacting roller (1), at the lateral ends (5, 6) of which are bolted on lateral plates (37) with mounts for the roller shaft, characterised in that bridges (44, 45) are arranged at the lateral ends (5, 6) of the roller frame (3) in a cross-sectional plane across two frame surfaces (14, 24) protruding and V-shaped with respect to each other, and that onto each side (38) facing the roller frame (3) of each lateral plate (37) are mounted two hook ledges (39, 40) which reach behind the bridges (44, 45) of the roller frame (3) with the lateral plate (37) in its attached state in which respect the hook ledges (39, 40) of the lateral plate together with a holding screw (51) engaging the roller frame (3) form an abutting clamping link.
2. Snow-compacting roller according to claim 1, characterised in that the axis of the holding screw (51) runs approximately in the direction of the bisector of the angle of the two bridges (39, 40).
3. Snow-compacting roller according to claim 1 or 2, characterised in that the hook ledges (39, 40) with the lateral plate (37) attached embrace the bridges (44, 45) from the outside, and that the screw (51) is attached to the roller frame (3) at a distance from the roller-frame surfaces (14, 24).
4. Snow-compacting roller according to at least one of the claims 1 to 3, characterised in that an insert pocket (46) which is open toward the V-shaped bridges (44, 45) is arranged for the lateral plate (37) at the side of the roller frame (3) in which respect the holding screw (51) engages the lateral plate (37) through the insert pocket (46) and is constructed as a tension bolt.
5. Snow-compacting roller according to at least one of the claims 1 to 4, characterised in that onto the side of the roller frame (3) is mounted an also triangular cover (43) which extends over the cross- sectional area of the roller frame (3).
6. Snow-compacting roller according to at least one of the claims 1 to 5, characterised in that a corresponding insert tongue (41) is bent off at the ends of the lateral plate (37) facing the insert pocket (46) onto which tongue is attached a nut (42).
7. Snow-compacting roller according to at least one of the claims 1 to 6, characterised in that the roller frame (3) is constructed as a baffle body and that the lateral edges (5, 6) are each arranged to be inclining from the centre of the roller frame (3).
8. Snow-compacting roller according to at least one of the claims 1 to 7, characterised in that the roller frame has a piste-facing roller-frame surface
(13) into the edges (15, 16) of which are worked in two fixing grooves (17, 18) to accommodate a smoothing device (19).
9. Snow-compacting roller according to at least one of the claims 1 to 8, characterised in that smoothing device (19) is provided with a forward part (21), which is cross-sectionally triangular and attached to the roller frame (3) along a first triangle side, the second triangle side (29) of which faces from the roller frame (3) pisteward and rearward and is constructed to be a rigid compacting surface and which is at its rearward end connected with a plate-shaped resilient part (22) in which respect the resilient part (22) in its unloaded state extends approximately parallel with the second triangle side (29) and in its loaded state approximately horizontally whereas a third triangle side (30) is constructed to be a support extending from the rearward end of the second triangle side (29) to the roller frame (3).
10. Snow-compacting roller according to at least one of the claims 1 to 9, characterised in that on the piste (B) facing side of the smoothing device (19) is arranged at least one cross-row (33, 34, 35) of lipped ribs (23) extending in the direction of travel (A).
11. Snow-compacting roller according to claim 10, characterised in that a first cross-row (33) of ribs (23) is mounted on the underside of a bridge (36) and extends up to the second frontal triangle side (29) of the rigid part (21).
12. Snow-compacting roller according to at least one of the claims 1 to 11, characterised in that the first cross-row (33) of ribs (23) is made of a hard, wear-resistant material.
13. Snow-compacting roller according to at least claim 12, characterised in that the therebehind located cross-rows (34, 35), as seen in the direction of travel, are made of a soft material.
14. Snow-compacting roller according to at least one of the claims 1 to 13, characterised in that the smoothing device (19) is made of polyurethane.
15. Snow-compacting roller according to at least one of the claims 1 to 14, characterised in that corondum particles are cast into the ribs (23) of the first cross-row (33).
16. Snow-compacting roller according to at least one of the claims 1 to 15, characterised in that the ribs (23) of the first cross-row (33) are covered toward the piste with spring-steel sheet (55).
17. Snow-compacting roller according to claim 16, characterised in that the spring-steel sheet (55) is bolted onto the smoothing device (19).
18. Snow-compacting roller according to at least claim 16 or 17, characterised in that the spring-steel sheet (55) is pushed together with the smoothing device (19) into the forward fixing groove (17) of the roller frame (3).
19. Snow-compacting roller according to at least one of the claims 1 to 18, characterised in that the spring-steel sheet on its own forms the second pisteward and rearward slating triangle side (29) of the smoothing device (19) and is connected at its rearward end with the plate-shaped resilient part (22).
20. Snow-compacting roller according to at least one of the claims 1 to 19, characterised in that the ribs (23) of the first cross-row (33) are constructed to be metal cams, equipped with fixing anchorages (54), which are cast together with their fixing anchorages (54) into the smoothing device (19).
21. Snow-compacting roller according to at least one of the claims 1 to 20, characterised in that the ribs (23) are arranged to be approximately drop- shaped.
22. Snow-compacting roller according to at least one of the claims 1 to 21, characterised in that the ribs (23) are constructed such that a more pointed part (52) points in the direction of travel and the following part (53) broadens against the direction of travel.
EP86112123A 1985-12-24 1986-09-02 Rotary snow cutter Expired - Lifetime EP0226711B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86112123T ATE55438T1 (en) 1985-12-24 1986-09-02 SNOW BLOWER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8536530U DE8536530U1 (en) 1985-12-24 1985-12-24 Snow blower
DE8536530U 1985-12-24

Publications (3)

Publication Number Publication Date
EP0226711A2 EP0226711A2 (en) 1987-07-01
EP0226711A3 EP0226711A3 (en) 1988-06-08
EP0226711B1 true EP0226711B1 (en) 1990-08-08

Family

ID=6788615

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86112123A Expired - Lifetime EP0226711B1 (en) 1985-12-24 1986-09-02 Rotary snow cutter

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US (1) US4726129A (en)
EP (1) EP0226711B1 (en)
JP (1) JP2691152B2 (en)
AT (1) ATE55438T1 (en)
CA (1) CA1267021A (en)
DE (2) DE8536530U1 (en)
YU (1) YU147486A (en)

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Also Published As

Publication number Publication date
DE3673360D1 (en) 1990-09-13
DE8536530U1 (en) 1986-04-24
US4726129A (en) 1988-02-23
EP0226711A3 (en) 1988-06-08
CA1267021A (en) 1990-03-27
JP2691152B2 (en) 1997-12-17
YU147486A (en) 1988-02-29
EP0226711A2 (en) 1987-07-01
ATE55438T1 (en) 1990-08-15
JPS62160307A (en) 1987-07-16

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