EP2718505B1 - Spreader device - Google Patents
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- EP2718505B1 EP2718505B1 EP12723615.6A EP12723615A EP2718505B1 EP 2718505 B1 EP2718505 B1 EP 2718505B1 EP 12723615 A EP12723615 A EP 12723615A EP 2718505 B1 EP2718505 B1 EP 2718505B1
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- European Patent Office
- Prior art keywords
- mixing
- mixing chamber
- spreading
- spreading apparatus
- floor
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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
- E01H10/00—Improving gripping of ice-bound or other slippery traffic surfaces, e.g. using gritting or thawing materials ; Roadside storage of gritting or solid thawing materials; Permanently installed devices for applying gritting or thawing materials; Mobile apparatus specially adapted for treating wintry roads by applying liquid, semi-liquid or granular materials
- E01H10/007—Mobile apparatus specially adapted for preparing or applying liquid or semi-liquid thawing material or spreading granular material on wintry roads
Definitions
- the present invention relates to a spreader, in particular for winter service vehicles, for dispensing of scattering material, comprising a scattering container, a discharge unit and arranged between the scattering container and the dispensing unit scattering material conveying path, wherein the dispensing unit has a rotating spreading plate and a central mixing chamber, in which the Scattering conveyor line opens and which comprises a rotating mixing tray and a non-rotating boundary with a around the axis of rotation of the mixing tray around extending, having an outlet opening side wall and an upper end part.
- Such a spreader is from the WO 2005/033417 A1 known.
- a liquid conveying path opens into the mixing chamber, so that the - initially dry - scattering substance in the mixing chamber is intensively moistened before the correspondingly moistened scattering material leaves the mixing chamber through the outlet opening and reaches the spreading plate be applied by this on the road to be sprinkled.
- the upper end part of the mixing chamber has an opening through which the scattering material enters the mixing chamber.
- Another spreading chamber having a central mixing chamber for spreading material is known from EP 1942230 A1 known.
- the present invention is directed to provide a spreader of the generic type, which is characterized by an improved characteristic of the scattering distribution.
- the upper end part of the mixing chamber at least adjacent to the side wall its height above the mixing tray in the circumferential direction.
- the upper end part of the mixing chamber provided in the spreader according to the invention is not a flat component extending parallel to the mixing bottom. Rather, at least adjacent to the side wall of the mixing chamber whose upper end part in the circumferential direction is arranged in regions higher above the mixing bottom than in other areas.
- the height of the upper end part of the mixing chamber in the direction of rotation of the mixing tray in front of the outlet opening steadily decreases over an angular range, wherein the range of decreasing height of the upper end part is preferred to short or possibly even immediately before Outlet opening extends.
- the scattering current over the said angular range is compressed or bundled comparatively uniformly in terms of its extent in height, so that discontinuity effects that would be associated with a loss of reproducibility can be largely avoided.
- a more or less flat scattering material jet leaves the mixing chamber through its window-like outlet opening, depending on the current spreading material throughput through the application unit, and arrives at the spreading plate, where it is detected by the throwing blades typically provided there.
- the angle range, beyond the height of the upper End part of the mixing chamber decreases steadily in the above-mentioned sense, is advantageously at least as large, more preferably at least about twice as large as the extension of the outlet opening in the circumferential direction.
- the said angle range is approximately between 80 ° and 160 °, particularly preferably between 90 ° and 150 °.
- the maximum height of the upper end part above the mixed bottom is at least 50%, more preferably at least about 80% or even 100% greater than the lowest height of the upper end part above the mixed bottom; or in other words, the minimum height of the upper end part above the mixed bottom is preferably at most 65%, more preferably at most about 55% or even only 50% of the highest height of the upper end part above the mixed bottom.
- a height of the side wall of the mixing chamber in particular sufficient for intimate mixing of dry spreading material with liquid, against which the scattering material is thrown through the rotating mixing floor, is available, with the above-described compaction on the other side the scattering jet is caused in height before leaving the mixing chamber.
- the height of the outlet opening is a maximum of 50% of the maximum height of the upper Final parts of the mixing chamber above the mixed bottom is.
- the smallest height of the upper end part of the mixing chamber above the mixing bottom is at most insignificant (for example at most 10%) greater than the maximum height of the edge which delimits the outlet opening above the mixed bottom.
- Another turn, with which the scattering result can be positively influenced, consists in a preferred embodiment of the present invention is that the height of the outlet opening above the mixing tray over an angular range in the direction of rotation of the mixing tray increases, ie the outlet opening after above limiting edge increases over an angular range.
- the circumferential direction of the scattering material along the side wall of the mixing chamber thus reaches scattering - at a low level to the mixed soil - seen earlier in the circumferential direction earlier through the outlet opening through the scattering plate as a scattering material, which migrates at a greater height to the mixing tray on the side wall of the mixing chamber.
- the risk of irregularities in the scattering pattern is significantly reduced, especially at high scattering substance throughputs by the application unit.
- the side wall of the mixing chamber of the spreader according to the invention has, according to yet another preferred development, a substantially cylindrical basic shape, so that the generatrices of the side wall preferably extend parallel to the axis of rotation of the mixing bottom.
- the side wall of the mixing chamber in this case have a substantially circular cylindrical basic shape, ie lie on the surface of a circular cylinder, which of course does not exclude a slight superimposed profiling (eg corrugation), by which mixing effects can be favored.
- the substantially circular-cylindrical basic shape of the side wall of the mixing chamber is also favorable with regard to the possibility to influence specifically by defined rotation of the boundary of the mixing chamber about its axis, which preferably coincides with the axis of rotation of the spreading plate Scatter image, ie the position of the streaked strip relative to the vehicle (centered or symmetrical or more or less pronounced asymmetrically shifted to the left or right).
- the boundary of the mixing chamber can be rotated (see below) in order to be able to change the angular position of the ejection opening relative to the spreading vehicle
- the opening provided above in the boundary of the mixing chamber, through which scattering material is supplied to the mixing chamber typically extends over one larger angle range, to avoid that the mouth of the scattering material conveyor line (eg a chute) must be rotated together with the mixing chamber to adjust the scattering pattern.
- the radial extent of the upper end part in that region, in it changes its height to the mixed soil is at least 15% of the radius' of the cylindrical basic shape of the side wall.
- a larger radial extension is quite possible, although it should be noted that typically a sufficiently large sized breakthrough in the upper end part is to be provided, through which scattering material passes from the scattering material conveying path into the mixing chamber.
- a liquid conveying path opens, through which liquid is fed into the mixing chamber, which serves to moisten the initially dry scattering substance.
- a liquid conveying path opens in the direction of rotation of the mixing bottom less than 180 ° behind the mouth of the scattering material conveying path.
- a relatively small angular offset between the mouth of the scattering material conveying path and the mouth of the liquid conveying path is particularly favorable, so that a particularly effective mixing of scattering material and liquid takes place within the mixing chamber before reaching the outlet opening.
- the upper end part of the mixing chamber extends in regions, preferably at least in the direction of rotation of the mixing bottom immediately behind the mouth of the liquid conveying path into the mixing chamber from the side wall substantially to the axis of rotation or hub of the mixing bottom.
- the mixing chamber is thus essentially closed towards the top.
- the upper end part of the mixing chamber is suitable in a preferred embodiment of the invention also to fix the mouth part of the liquid conveying path.
- the mouth of the scattering material conveyor line changes when the boundary of the mixing chamber - to change the scattering pattern - rotatable, the mouth of the scattering material conveyor line is stationary (see above), the angular offset between the mouth of the scattering conveyor line and the mouth of the liquid conveyor line in dependence the set position of the scattering pattern; it is preferably between about 45 ° and 155 °, depending on the spreading pattern.
- the mixed bottom passes radially inward into a substantially frusto-conical core.
- This too may favor an effective mixing of the scattering substance and the liquid in the mixing chamber, in particular if a partial flow of the liquid is directed onto the frustoconical core.
- the liquid stream introduced into the mixing chamber through the liquid conveying path is divided into two partial streams in the mouth region of the liquid conveying path, one of which is directed against the side wall of the boundary of the mixing chamber and the other against the central core is.
- the radius of the mixing plate can be between 30% and 70% of the radius of the spreading plate. Again, this is a favorable for a particularly uniform spreading pattern design. This is true in any case when the mixing tray and the spreading plate rotate in the same direction and at the same rotational speed, in particular by being coupled together. The latter is certainly not mandatory. Rather, it is also within the scope of the present invention that the mixed bottom and the spreading plate rotate at different speeds. It is even conceivable an opposite turning of mixed soil and spreading plate.
- mixing chamber by no means implies that two different substances (eg a solid and a liquid or two solids such as a salt / grit mixture) are mixed there.
- mixing instead of mixing
- a substance eg salt
- central mixing chamber clearly indicates that it extends around the axis of rotation of the mixing tray.
- the mixing chamber 4 comprises a slightly profiled mixing bottom 5 which rotates together with the spreading plate 3 and a non-rotating boundary 6.
- the latter consists essentially of a side wall extending around the common axis of rotation 1 of spreading plate 3 and mixing bottom 5 along a circular cylindrical surface 7 and an upper end part 8, which is connected to the side wall 7 along the upper edge thereof.
- a window-like outlet opening 9 is provided through which scattering material passes from the mixing chamber 4 to the surrounding spreading plate 3.
- the boundary 6 of the mixing chamber 4 is rotatably mounted within predetermined limits about the axis 1 in order to adjust the angular position of the outlet opening 9 and thus the Abschgeometrie.
- an adjustment drive (not shown) engages the bolt 21 connected to the boundary 6 of the mixing chamber 4. Shown in the drawing, the position of the boundary 6 of the mixing chamber 4 at a discharge direction "asymmetrical left”; for this position, the following information applies, as far as they relate to the relation between the boundary 6 of the mixing chamber 4 and the chute 11.
- the boundary 6 of the mixing chamber 4 is to be rotated counter to the direction of rotation A of the spreading disc 3.
- the annular gap between the lower edge of the side wall 7 of the (non-rotating) boundary 6 of the mixing chamber 4 and the (rotating) spreading plate 3 is dimensioned so that leakage of scattering particles through the annular gap is avoided to a significant extent as well as jamming of scattering particles in the annular gap.
- the peripheral edge of the mixing bottom 5 ends at a small distance above the spreading plate 3, which extends radially inwardly below the mixing bottom 5.
- the spreading plate 4 has below the mixing bottom 5 drainage holes for liquid, which passes through the existing between the mixing tray and the spreading plate annular gap under the mixing tray.
- the side wall 7 of the mixing chamber 4 changes its height in the circumferential direction above the mixing bottom 5. And accordingly also changes the upper end part 8 - in the circumferential direction of the mixing chamber 4 - adjacent to the side wall 7 its height above the mixing bottom 5.
- the side wall approximately opposite to Scblin 11 and in an in the direction of rotation A of the spreading plate 3 and mixing tray 5 adjoining thereto angular range of about 120 ° to a maximum height, so that the upper end part 8 there also has a maximum height above the mixing tray 5.
- the height of the side wall 7 of the mixing chamber 4 then gradually gradually reduced to only about 50% of its maximum height; and accordingly, the height of the upper end part 8 relative to the mixed bottom 5, which due to the opening 10 there is limited to a strip 13 extending along the upper edge 12 of the side wall 7, whose radial extent is about 15%, also decreases over the said second angular range.
- the radius of the Sidewall 7 is, also steadily.
- the upper end part 8 accordingly only about 50% of its maximum height above the mixing bottom fifth
- the outlet opening 9 extends over an angular range of about 45 °, i. over about one third of the angular range within which the height of side wall 7 and upper end portion 8 is reduced in the manner described above.
- the edge 15 which delimits the outlet opening does not abruptly rise at the beginning 14 of the outlet opening, but rather gradually, so that the height of the outlet opening 9 above the mixing floor 5 increases over an angular range in the direction of rotation A of the mixing floor 5.
- the maximum height of the outlet opening 9 and the lowest height of the upper end part 8 above the mixing bottom 5 essentially correspond to each other.
- the mixing chamber 4 further opens a liquid conveying path, with which for the purpose of moistening the (initially dry) scattering material in the mixing chamber is introduced into this liquid.
- the spray tube 16 with arranged in the mixing chamber spray openings 17. The latter provide a division of the registered in the mixing chamber 4 liquid flow into two partial streams, one of which, ie in the direction of the side wall 7 of the Limit 6 of the mixing chamber 4 is directed and the other inward.
- the spray tube 16 which is fixed on the rear end of the opening 10 of the boundary 6 of the mixing chamber 4, viewed in the direction of rotation A, by means of a retaining plate 19 at its upper end part 8, is located in the illustrated position ("asymmetrically left") of the boundary 6 of the mixing chamber - viewed in the direction of rotation A of the mixing tray 5 about 150 ° behind the chute 11. From the spray tube 16 extends from the approximately opposite beginning of the opening 10, the upper end part 8 in the radial direction of the side wall 7 of the mixing chamber. 4 to substantially the axis of rotation 1 of the mixing tray, ie the hub 18, so that over approximately half the circumference of the mixing chamber is substantially completed towards the top. Over this area, the boundary 6 of the mixing chamber 4 is rotatably mounted on the hub 18 about the axis 1.
- the mixed bottom 5 passes radially inward into a substantially frusto-conical core 20.
- This too is superficially slightly profiled to support the mixing of scattering material and liquid in the mixing chamber 4, for example by means of grooves; and the inwardly directed partial jet of the liquid stream introduced into the mixing clamp 4 is directed against the core.
- every second throwing blade 2 is adjustably mounted on the spreading plate 3 to the Change litter characteristic and be able to adapt to the specific scattering material; For this purpose, the respective throwing blade radially on the outside mounting tabs 24 which can be fixed in different positions on the spreading plate 3.
- the throwing blades are not all set at the same angle to the radial direction, but the angle of attack changes alternately. Also, the throwing blades 2 alternately change their length slightly. Furthermore, the upper end part 8 does not extend over the entire circumference of the mixing chamber 4; Rather, there exists - approximately above the outlet opening 9 and in the direction of rotation A slightly thereafter - an angular range in which the mixing chamber 4 has no upper end part, ie the mixing chamber 4 is open at the top, in which the opening 10 here up to the side wall 7 extends. Finally, with the boundary 6 of the mixing chamber 4 via a holder 22, a deflector 23 (only in Fig.
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Description
Die vorliegende Erfindung betrifft ein Streugerät, insbesondere für Winterdienstfahrzeuge, zum Ausbringen von Streustoff, umfassend einen Streustoffbehälter, eine Ausbringeinheit und eine zwischen dem Streustoffbehälter und der Ausbringeinheit angeordnete Streustoff-Förderstrecke, wobei die Ausbringeinheit einen rotierenden Streuteller und eine zentrale Mischkammer aufweist, in welche die Streustoff-Förderstrecke mündet und die einen rotierenden Mischboden und eine nicht-rotierende Begrenzung mit einer sich um die Drehachse des Mischbodens herum erstreckenden, eine Austrittsöffnung aufweisenden Seitenwand und einem oberen Abschlussteil umfasst.The present invention relates to a spreader, in particular for winter service vehicles, for dispensing of scattering material, comprising a scattering container, a discharge unit and arranged between the scattering container and the dispensing unit scattering material conveying path, wherein the dispensing unit has a rotating spreading plate and a central mixing chamber, in which the Scattering conveyor line opens and which comprises a rotating mixing tray and a non-rotating boundary with a around the axis of rotation of the mixing tray around extending, having an outlet opening side wall and an upper end part.
Ein derartiges Streugerät ist aus der
Eine weitere eine zentrale Mischkammer aufweisende Ausbringeinheit für Streustoff ist aus der
Die vorliegende Erfindung ist darauf gerichtet, ein Streugerät der gattungsgemäßen Art bereitzustellen, welches sich durch eine verbesserte Charakteristik der Streustoffverteilung auszeichnet.The present invention is directed to provide a spreader of the generic type, which is characterized by an improved characteristic of the scattering distribution.
Gelöst wird diese Aufgabenstellung gemäß der vorliegenden Erfindung, indem bei einem Streugerät der gattungsgemäßen Art das obere Abschlussteil der Mischkammer zumindest benachbart zu der Seitenwand seine Höhe über dem Mischboden in Umfangsrichtung ändert. Das obere Abschlussteil der bei dem erfindungsgemäßen Streugerät vorgesehenen Mischkammer ist somit, mit anderen Worten, kein ebenes, sich parallel zu dem Mischboden erstreckendes Bauteil. Vielmehr ist jedenfalls benachbart zu der Seitenwand der Mischkammer deren oberes Abschlussteil in Umfangsrichtung bereichsweise höher oberhalb des Mischbodens angeordnet als in anderen Bereichen. Durch diese Maßnahme kann gezielt Einfluss genommen werden auf die Höhe des sich - unter Einwirkung des sich drehenden Mischbodens und der durch diesen auf das Streustoff ausgeübten Zentrifugalkräfte - entlang der Seitenwand der Mischkammer bewegenden Streustoffstromes insbesondere dergestalt, dass der sich entlang der Seitenwand der Mischkammer bewegende Streustoffstrom in Richtung auf die Austrittsöffnung konvergiert bzw. die Höhe des sich entlang der Seitenwand bewegenden Streustoffstromes im Bereich der Austrittsöffnung der Mischkammer - gemessen an der Höhe in anderen Umfangszonen der Mischkammer - vergleichsweise gering, d.h. der Streustoffstrom relativ gebündelt ist. Dies wirkt sich vergleichmäßigend auf die Abwurfcharakteristik und somit die Reproduzierbarkeit und Vorhersagbarkeit des Streubildes aus.This object is achieved according to the present invention by changing in a spreader of the generic type, the upper end part of the mixing chamber at least adjacent to the side wall its height above the mixing tray in the circumferential direction. In other words, the upper end part of the mixing chamber provided in the spreader according to the invention is not a flat component extending parallel to the mixing bottom. Rather, at least adjacent to the side wall of the mixing chamber whose upper end part in the circumferential direction is arranged in regions higher above the mixing bottom than in other areas. By means of this measure, it is possible to exert deliberate influence on the height of the scattering material flow moving along the side wall of the mixing chamber under the effect of the rotating mixing bottom and the centrifugal forces exerted thereon by the spreading material, in particular such that the scattering material flow moving along the side wall of the mixing chamber converged in the direction of the outlet opening or the Height of the moving along the side wall scattering flow in the region of the outlet opening of the mixing chamber - measured at the height in other peripheral zones of the mixing chamber - comparatively low, that is, the scattering current is relatively bundled. This has a uniform effect on the discharge characteristic and thus the reproducibility and predictability of the scattering image.
Im Sinne einer ersten bevorzugten Weiterbildung der vorliegenden Erfindung nimmt die Höhe des oberen Abschlussteiles der Mischkammer in Drehrichtung des Mischbodens vor der Austrittsöffnung über einen Winkelbereich stetig ab, wobei sich der Bereich der abnehmenden Höhe des oberen Abschlussteils bevorzugt bis kurz oder ggfs. sogar unmittelbar vor die Austrittsöffnung erstreckt. Bei dieser Weiterbildung wird der Streustoffstrom über den besagten Winkelbereich vergleichsweise gleichmäßig hinsichtlich seiner Ausdehnung in der Höhe gewissermaßen komprimiert bzw. gebündelt, so dass sich Unstetigkeitseffekte, die mit einer Einbuße an Reproduzierbarkeit verbunden wären, weitgehend vermeiden lassen. Je nach dem aktuellen Streustoffdurchsatz durch die Ausbringeinheit verlässt auf diese Weise im Ergebnis ein mehr oder weniger flacher Streustoffstrahl die Mischkammer durch deren fensterartige Austrittsöffnung hindurch und gelangt auf den Streuteller, wo er von den dort typischerweise vorgesehenen Wurfschaufeln erfasst wird. Der Winkelbereich, über den hin die Höhe des oberen Abschlussteils der Mischkammer in dem vorstehend aufgezeigten Sinne stetig abnimmt, ist dabei vorteilhafterweise mindestens ebenso groß, besonders bevorzugt mindestens etwa doppelt so groß wie die Erstreckung der Austrittsöffnung in Umfangsrichtung. Für typische Anwendungsfälle ist es günstig, wenn der besagte Winkelbereich etwa zwischen 80° und 160°, besonders bevorzugt zwischen 90° und 150° beträgt.In the sense of a first preferred embodiment of the present invention, the height of the upper end part of the mixing chamber in the direction of rotation of the mixing tray in front of the outlet opening steadily decreases over an angular range, wherein the range of decreasing height of the upper end part is preferred to short or possibly even immediately before Outlet opening extends. In this development, the scattering current over the said angular range is compressed or bundled comparatively uniformly in terms of its extent in height, so that discontinuity effects that would be associated with a loss of reproducibility can be largely avoided. As a result, a more or less flat scattering material jet leaves the mixing chamber through its window-like outlet opening, depending on the current spreading material throughput through the application unit, and arrives at the spreading plate, where it is detected by the throwing blades typically provided there. The angle range, beyond the height of the upper End part of the mixing chamber decreases steadily in the above-mentioned sense, is advantageously at least as large, more preferably at least about twice as large as the extension of the outlet opening in the circumferential direction. For typical applications, it is favorable if the said angle range is approximately between 80 ° and 160 °, particularly preferably between 90 ° and 150 °.
Gemäß einer anderen bevorzugten Weiterbildung der Erfindung ist die maximale Höhe des oberen Abschlussteils über dem Mischboden mindestens 50%, besonders bevorzugt mindestens etwa 80% oder sogar 100% größer als die geringste Höhe des oberen Abschlussteils über dem Mischboden; oder es beträgt, mit anderen Worten, die minimale Höhe des oberen Abschlussteils über dem Mischboden bevorzugt höchstens 65%, besonders bevorzugt höchstens etwa 55% oder sogar nur 50% der größten Höhe des oberen Abschlussteils über dem Mischboden. Insoweit steht in den Bereichen mit nicht reduzierter Höhe eine insbesondere für eine innige Vermischung von trockenem Streustoff mit Flüssigkeit ausreichende Höhe der Seitenwand der Mischkammer, gegen welche der Streustoff durch den rotierenden Mischboden geschleudert wird, zur Verfügung, wobei auf der anderen Seite die vorstehend erläuterte Verdichtung des Streustoffstrahles in der Höhe vor dem Verlassen der Mischkammer bewirkt wird. In vergleichbarer Hinsicht ist es von Vorteil, wenn die Höhe der Austrittsöffnung maximal 50% der maximalen Höhe des oberen Abschlussteiles der Mischkammer über dem Mischboden beträgt.According to another preferred embodiment of the invention, the maximum height of the upper end part above the mixed bottom is at least 50%, more preferably at least about 80% or even 100% greater than the lowest height of the upper end part above the mixed bottom; or in other words, the minimum height of the upper end part above the mixed bottom is preferably at most 65%, more preferably at most about 55% or even only 50% of the highest height of the upper end part above the mixed bottom. In that regard, in the areas of non-reduced height, a height of the side wall of the mixing chamber, in particular sufficient for intimate mixing of dry spreading material with liquid, against which the scattering material is thrown through the rotating mixing floor, is available, with the above-described compaction on the other side the scattering jet is caused in height before leaving the mixing chamber. In a similar respect, it is advantageous if the height of the outlet opening is a maximum of 50% of the maximum height of the upper Final parts of the mixing chamber above the mixed bottom is.
In wiederum anderer bevorzugter Weiterbildung der Erfindung ist vorgesehen, dass die geringste Höhe des oberen Abschlussteils der Mischkammer über dem Mischboden allenfalls unwesentlich (z.B. allenfalls 10%) größer ist als die maximale Höhe der die Austrittsöffnung nach oben begrenzenden Kante über dem Mischboden. Auf diese Weise wird gewährleistet, dass selbst im Falle einer vergleichsweise niedrigen Austrittsöffnung, was im Hinblick auf ein gut reproduzierbares Streubild von Vorteil ist, Streustoff nicht mehrfach in der Mischkammer zirkuliert, sondern vielmehr gezielt beim erstmaligen Erreichen der Austrittsöffnung beim Umlauf durch die Mischkammer diese verlässt. Auch dies wirkt sich positiv auf das Streubild bzw. dessen gezielte Veränderung (z.B. durch gezielte Erhöhung der Streudichte) aus, weil ausgeschlossen ist, dass durch einen mehrfachen Umlauf des Streustoffs in der Mischkammer die entsprechende Beeinflussung des Streubildes erst zeitverzögert und hinsichtlich der Intensität abgemildert umgesetzt wird.In yet another preferred development of the invention, it is provided that the smallest height of the upper end part of the mixing chamber above the mixing bottom is at most insignificant (for example at most 10%) greater than the maximum height of the edge which delimits the outlet opening above the mixed bottom. In this way, it is ensured that even in the case of a comparatively low outlet opening, which is advantageous in view of a well reproducible scattering pattern, scattering material does not circulate several times in the mixing chamber, but instead selectively leaves it when it first reaches the outlet opening when passing through the mixing chamber , This also has a positive effect on the scattering pattern or its targeted change (for example, by deliberately increasing the scattering density), because it is precluded that the corresponding influence of the scattering pattern is only delayed and moderated with respect to intensity by a multiple circulation of the scattering substance in the mixing chamber becomes.
Eine wiederum andere Maßnahme, mit welcher sich das Streuergebnis positiv beeinflussen lässt, besteht in bevorzugter Weiterbildung der vorliegenden Erfindung darin, dass die Höhe der Austrittsöffnung über dem Mischboden über einen Winkelbereich in Drehrichtung des Mischbodens zunimmt, d.h. die die Austrittsöffnung nach oben begrenzende Kante über einen Winkelbereich ansteigt. In Umlaufrichtung des Streustoffes entlang der Seitenwand der Mischkammer gelangt somit Streustoff - in geringer Höhe zum Mischboden - in Umfangsrichtung gesehen früher durch die Austrittsöffnung hindurch zum Streuteller als Streustoff, der in größerer Höhe zum Mischboden an der Seitenwand der Mischkammer entlang wandert. Hierdurch wird namentlich bei hohen Streustoffdurchsätzen durch die Ausbringeinheit das Risiko von Ungleichförmigkeiten im Streubild (z.B. aufgrund einer Schwallbildung) maßgeblich reduziert.Another turn, with which the scattering result can be positively influenced, consists in a preferred embodiment of the present invention is that the height of the outlet opening above the mixing tray over an angular range in the direction of rotation of the mixing tray increases, ie the outlet opening after above limiting edge increases over an angular range. In the circumferential direction of the scattering material along the side wall of the mixing chamber thus reaches scattering - at a low level to the mixed soil - seen earlier in the circumferential direction earlier through the outlet opening through the scattering plate as a scattering material, which migrates at a greater height to the mixing tray on the side wall of the mixing chamber. As a result, the risk of irregularities in the scattering pattern (for example, due to surge formation) is significantly reduced, especially at high scattering substance throughputs by the application unit.
Die Seitenwand der Mischkammer des erfindungsgemäßen Streugeräts weist gemäß einer abermals anderen bevorzugten Weiterbildung eine im Wesentlichen zylindrische Grundform auf, so dass sich die Erzeugenden der Seitenwand bevorzugt parallel zur Rotationsachse des Mischbodens erstrecken. Insbesondere kann die Seitenwand der Mischkammer dabei eine im wesentlichen kreiszylindrische Grundform aufweisen, d.h. auf der Oberfläche eines Kreiszylinders liegen, was freilich nicht eine leichte überlagerte Profilierung (z.B. Wellung) ausschließt, durch welche Mischeffekte begünstigt werden können. Die im Wesentlichen kreiszylindrische Grundform der Seitenwand der Mischkammer ist dabei auch günstig im Hinblick auf die Möglichkeit, durch definiertes Verdrehen der Begrenzung der Mischkammer um deren Achse, die bevorzugt mit der Rotationsachse des Streutellers zusammenfällt, gezielt Einfluss zu nehmen auf das Streubild, d.h. die Lage des bestreuten Streifens relativ zum Fahrzeug (mittig bzw. symmetrisch oder aber mehr oder weniger ausgeprägt asymmetrisch nach links oder rechts verlagert). Ist in diesem Sinne die Begrenzung der Mischkammer verdrehbar (s.u.), um die Winkelstellung der Auswurföffnung relativ zum Streufahrzeug verändern zu können, so erstreckt sich typischerweise der oben in der Begrenzung der Mischkammer vorgesehene Durchbruch, durch welchen hindurch Streustoff der Mischkammer zugeführt wird, über einen größeren Winkelbereich, um zu vermeiden, dass die Mündung der Streustoff-Förderstrecke (z.B. eine Schütte) zur Verstellung des Streubildes gemeinsam mit der Mischkammer verdreht werden muss.The side wall of the mixing chamber of the spreader according to the invention has, according to yet another preferred development, a substantially cylindrical basic shape, so that the generatrices of the side wall preferably extend parallel to the axis of rotation of the mixing bottom. In particular, the side wall of the mixing chamber in this case have a substantially circular cylindrical basic shape, ie lie on the surface of a circular cylinder, which of course does not exclude a slight superimposed profiling (eg corrugation), by which mixing effects can be favored. The substantially circular-cylindrical basic shape of the side wall of the mixing chamber is also favorable with regard to the possibility to influence specifically by defined rotation of the boundary of the mixing chamber about its axis, which preferably coincides with the axis of rotation of the spreading plate Scatter image, ie the position of the streaked strip relative to the vehicle (centered or symmetrical or more or less pronounced asymmetrically shifted to the left or right). If, in this sense, the boundary of the mixing chamber can be rotated (see below) in order to be able to change the angular position of the ejection opening relative to the spreading vehicle, the opening provided above in the boundary of the mixing chamber, through which scattering material is supplied to the mixing chamber, typically extends over one larger angle range, to avoid that the mouth of the scattering material conveyor line (eg a chute) must be rotated together with the mixing chamber to adjust the scattering pattern.
Im Hinblick auf die weiter oben erläuterte Wirkung, nämlich die effektive Einflussnahme auf die Höhe des an der Seitenwand der Mischkammer entlang wandernden Streustoffstromes, ist gemäß einer wiederum anderen bevorzugten Weiterbildung der Erfindung von Vorteil, wenn die radiale Erstreckung des oberen Abschlussteils in jenem Bereich, in dem es seine Höhe zu dem Mischboden verändert, mindestens 15% des Radius' der zylindrischen Grundform der Seitenwand beträgt. Eine größere radial Erstreckung ist durchaus möglich, wobei allerdings zu beachten ist, dass typischerweise ein ausreichend groß dimensionierter Durchbruch in dem oberen Abschlussteil vorzusehen ist, durch welchen hindurch Streustoff von der Streustoff-Förderstrecke in die Mischkammer hinein gelangt.With regard to the effect explained above, namely the effective influencing of the height of the scattering material flow traveling along the side wall of the mixing chamber, according to yet another preferred development of the invention, it is advantageous if the radial extent of the upper end part in that region, in it changes its height to the mixed soil, is at least 15% of the radius' of the cylindrical basic shape of the side wall. A larger radial extension is quite possible, although it should be noted that typically a sufficiently large sized breakthrough in the upper end part is to be provided, through which scattering material passes from the scattering material conveying path into the mixing chamber.
Die vorliegende Erfindung ist insbesondere von Nutzen, wenn in die Mischkammer auch eine Flüssigkeits-Förderstrecke mündet, durch welche hindurch Flüssigkeit in die Mischkammer eingespeist wird, welche zur Befeuchtung des zunächst trockenen Streustoffes dient. Besonders bevorzugt mündet eine solche Flüssigkeits-Förderstrecke in Drehrichtung des Mischbodens weniger als 180° hinter der Mündung der Streustoff-Förderstrecke. Ein relativ geringer Winkelversatz zwischen der Mündung der Streustoff-Förderstrecke und der Mündung der Flüssigkeits-Förderstrecke ist besonders günstig, damit eine besonders effektive Vermischung von Streustoff und Flüssigkeit innerhalb der Mischkammer vor dem Erreichen der Austrittsöffnung erfolgt. Besonders vorteilhaft ist es dabei, wenn das obere Abschlussteil der Mischkammer sich bereichsweise, bevorzugt jedenfalls in Drehrichtung des Mischbodens unmittelbar hinter der Mündung der Flüssigkeits-Förderstrecke in die Mischkammer von der Seitenwand bis im wesentlichen zur Rotationsachse bzw. Nabe des Mischbodens erstreckt. In dem betreffenden Bereich ist somit die Mischkammer nach oben hin im Wesentlichen abgeschlossen. Auf diese Weise wird ein durch Fahrtwindverwirbelungen hervorgerufener Verlust an Flüssigkeit, welche idealerweise relativ fein verdüst, d.h. in Form von relativ kleinen Tröpfchen in die Mischkammer eingebracht wird, minimiert, d.h. es geht nur ein minimaler Anteil der zur Befeuchtung des Streustoffes in die Mischkammer eingesprühten Flüssigkeit durch einen unkontrollierten Austrag verloren. Das obere Abschlussteil der Mischkammer eignet sich dabei in bevorzugter Weiterbildung der Erfindung auch dazu, das Mündungsteil der Flüssigkeits-Förderstrecke zu fixieren. In diesem Falle ändert sich, wenn die Begrenzung der Mischkammer - zur Veränderung des Streubildes - drehbar, die Mündung der Streustoff-Förderstrecke indessen stationär ist (s.o.), der Winkelversatz zwischen Mündung der Streustoff-Förderstrecke und der Mündung der Flüssigkeits-Förderstrecke in Abhängigkeit von der eingestellten Lage des Streubildes; bevorzugt beträgt er je nach Streubildlage zwischen etwa 45° und 155°.The present invention is particularly useful when in the mixing chamber, a liquid conveying path opens, through which liquid is fed into the mixing chamber, which serves to moisten the initially dry scattering substance. Particularly preferably, such a liquid conveying path opens in the direction of rotation of the mixing bottom less than 180 ° behind the mouth of the scattering material conveying path. A relatively small angular offset between the mouth of the scattering material conveying path and the mouth of the liquid conveying path is particularly favorable, so that a particularly effective mixing of scattering material and liquid takes place within the mixing chamber before reaching the outlet opening. It is particularly advantageous if the upper end part of the mixing chamber extends in regions, preferably at least in the direction of rotation of the mixing bottom immediately behind the mouth of the liquid conveying path into the mixing chamber from the side wall substantially to the axis of rotation or hub of the mixing bottom. In the area in question, the mixing chamber is thus essentially closed towards the top. In this way, caused by Fahrtwindverwirbelungen loss of liquid, which is ideally relatively finely atomized, ie introduced in the form of relatively small droplets in the mixing chamber, minimized, ie it is only a minimum proportion of sprayed for moistening the scattering material in the mixing chamber Liquid lost due to an uncontrolled discharge. The upper end part of the mixing chamber is suitable in a preferred embodiment of the invention also to fix the mouth part of the liquid conveying path. In this case, changes when the boundary of the mixing chamber - to change the scattering pattern - rotatable, the mouth of the scattering material conveyor line is stationary (see above), the angular offset between the mouth of the scattering conveyor line and the mouth of the liquid conveyor line in dependence the set position of the scattering pattern; it is preferably between about 45 ° and 155 °, depending on the spreading pattern.
Gemäß einer wiederum anderen bevorzugten Weiterbildung der Erfindung geht der Mischboden radial innen in einen im Wesentlichen kegelstumpfförmigen Kern über. Auch dies kann eine effektive Durchmischung von Streustoff und Flüssigkeit in der Mischkammer begünstigen, insbesondere wenn ein Teilstrom der Flüssigkeit auf den kegelstumpfförmigen Kern gerichtet wird. In diesem Sinne ist es besonders günstig, wenn der durch die Flüssigkeits-Förderstrecke in die Mischkammer eingetragene Flüssigkeitsstrom im Mündungsbereich der Flüssigkeits-Förderstrecke in zwei Teilströme aufgeteilt wird, von denen einer gegen die Seitenwand der Begrenzung der Mischkammer und der andere gegen den zentralen Kern gerichtet ist.According to yet another preferred development of the invention, the mixed bottom passes radially inward into a substantially frusto-conical core. This too may favor an effective mixing of the scattering substance and the liquid in the mixing chamber, in particular if a partial flow of the liquid is directed onto the frustoconical core. In this sense, it is particularly advantageous if the liquid stream introduced into the mixing chamber through the liquid conveying path is divided into two partial streams in the mouth region of the liquid conveying path, one of which is directed against the side wall of the boundary of the mixing chamber and the other against the central core is.
Schließlich kann in abermals bevorzugter Weiterbildung der Erfindung der Radius des Mischtellers zwischen 30% und 70% des Radius' des Streutellers betragen. Auch dies ist wiederum eine für ein besonders gleichmäßiges Streubild günstige Bemessung. Dies gilt jedenfalls dann, wenn sich der Mischboden und der Streuteller gleichsinnig und mit gleicher Rotationsgeschwindigkeit drehen, insbesondere indem sie miteinander gekoppelt sind. Letzteres ist freilich nicht zwingend vorgesehen. Vielmehr kommt im Rahmen der vorliegenden Erfindung auch in Betracht, dass sich der Mischboden und der Streuteller unterschiedlich schnell drehen. Denkbar ist sogar ein gegenläufiges Drehen von Mischboden und Streuteller.Finally, in a further preferred development of the invention, the radius of the mixing plate can be between 30% and 70% of the radius of the spreading plate. Again, this is a favorable for a particularly uniform spreading pattern design. This is true in any case when the mixing tray and the spreading plate rotate in the same direction and at the same rotational speed, in particular by being coupled together. The latter is certainly not mandatory. Rather, it is also within the scope of the present invention that the mixed bottom and the spreading plate rotate at different speeds. It is even conceivable an opposite turning of mixed soil and spreading plate.
Allein aus Gründen der Klarstellung ist darauf hinzuweisen, dass der Begriff "Mischkammer" keineswegs impliziert, dass dort zwei unterschiedliche Stoffe (z.B. ein Feststoff und eine Flüssigkeit oder zwei Feststoffe wie beispielsweise bei einem Salz/Splitt-Gemisch) gemischt werden. In einer "Mischkammer" im Sinne der vorliegenden Erfindung kann vielmehr (allein) auch eine Durchmischung von einem Stoff, z.B. Salz erfolgen. Weiterhin sei klargestellt, dass der Begriff "zentrale" Mischkammer ersichtlich besagt, dass diese sich um die Rotationsachse des Mischbodens herum erstreckt.For the sake of clarity only, it should be noted that the term "mixing chamber" by no means implies that two different substances (eg a solid and a liquid or two solids such as a salt / grit mixture) are mixed there. In a "mixing chamber" within the meaning of the present invention, mixing (instead of mixing) of a substance, eg salt, can be carried out (alone). Furthermore, it should be understood that the term "central" mixing chamber clearly indicates that it extends around the axis of rotation of the mixing tray.
Im Folgenden wird die vorliegende Erfindung anhand eines in der Zeichnung veranschaulichten bevorzugten Ausführungsbeispiels näher erläutert. Dabei zeigt
- Fig. 1
- die Ausbringeinheit eines erfindungsgemäß ausgeführten Streugeräts in einer ersten perspektivischen Ansicht und
- Fig. 2
- die in
Fig. 1 gezeigte Ausbringeinheit aus einer zweiten Perspektive.
- Fig. 1
- the application unit of a spreader according to the invention in a first perspective view and
- Fig. 2
- in the
Fig. 1 shown application unit from a second perspective.
Die in der Zeichnung - ohne die typischerweise vorgesehene Abdeckung - veranschaulichte Ausbringeinheit weist einen motorisch angetriebenen, um die vertikale Achse 1 rotierenden (Pfeil A), mit Wurfschaufeln 2 bestückten Streuteller 3 und eine zentrale Mischkammer 4 auf. Die Mischkammer 4 umfasst einen gemeinsam mit dem Streuteller 3 rotierenden, leicht profilierten Mischboden 5 und eine nicht-rotierende Begrenzung 6. Letztere besteht im Wesentlichen aus einer sich um die gemeinsame Drehachse 1 von Streuteller 3 und Mischboden 5 herum - längs einer Kreiszylinderfläche - erstreckende Seitenwand 7 und einem oberen Abschlussteil 8, welches mit der Seitenwand 7 längs dessen oberen Randes verbunden ist. In der Seitenwand 7 ist eine fensterartige Austrittsöffnung 9 vorgesehen, durch welche hindurch Streustoff aus der Mischkammer 4 auf den diese umgebenden Streuteller 3 gelangt. In die Mischkammer 4 gelangt der Streustoff durch einen in dem oberen Abschlussteil vorgesehenen, sich über einen Winkelbereich von etwa 180° erstreckenden Durchbruch 10. Eine den Streustoffbehälter mit der Ausbringeinheit verbindende Streustoff-Förderstrecke mündet in der Mischkammer 4, indem eine den unteren Abschluss der Streustoff-Förderstrecke bildende Schütte 11 nahe oberhalb des Durchbruchs 10 endet.In the drawing - without the cover typically provided - illustrated application unit has a motor-driven, about the
Die Begrenzung 6 der Mischkammer 4 ist innerhalb vorgegebener Grenzen um die Achse 1 herum verdrehbar gelagert, um die Winkelstellung der Austrittsöffnung 9 und somit die Abwurfgeometrie verstellen zu können. Hierzu greift ein - nicht dargestellter - Verstellantrieb an dem mit der Begrenzung 6 der Mischkammer 4 verbundenen Bolzen 21 an. Dargestellt ist in der Zeichnung die Stellung der Begrenzung 6 der Mischkammer 4 bei einer Abwurfrichtung "asymmetrisch links"; für diese Stellung gelten nachfolgende Angaben, soweit diese sich auf die Relation zwischen der Begrenzung 6 der Mischkammer 4 und die Schütte 11 beziehen. Zur Verlagerung des Streubildes nach "symmetrisch" oder - noch weitergehend - "asymmetrisch rechts" ist die Begrenzung 6 der Mischkammer 4 entgegen der Drehrichtung A des Streutellers 3 zu verdrehen.The
Der Ringspalt zwischen der Unterkante der Seitenwand 7 der (nicht rotierenden) Begrenzung 6 der Mischkammer 4 und dem (rotierenden) Streuteller 3 ist dabei so bemessen, dass ein Austreten von Streustoffpartikeln durch den Ringspalt hindurch im nennenswerten Umfang ebenso vermieden wird wie ein Verklemmen von Streustoffpartikeln in dem Ringspalt. Der Umfangsrand des Mischbodens 5 endet mit einem geringen Abstand oberhalb des Streutellers 3, welcher sich radial nach innen unter den Mischboden 5 erstreckt. Der Streuteller 4 weist unterhalb des Mischbodens 5 Abflusslöcher für Flüssigkeit auf, welche durch den zwischen dem Mischboden und dem Streuteller bestehenden Ringspalt unter den Mischboden gelangt.The annular gap between the lower edge of the
Die Seitenwand 7 der Mischkammer 4 ändert in Umfangsrichtung ihre Höhe oberhalb des Mischbodens 5. Und dementsprechend ändert auch das obere Abschlussteil 8 - in Umfangsrichtung der Mischkammer 4 - benachbart zu der Seitenwand 7 seine Höhe über dem Mischboden 5. So weist die Seitenwand etwa gegenüber der Schütte 11 sowie in einem sich in Rotationsrichtung A von Streuteller 3 und Mischboden 5 daran anschließenden Winkelbereich von ca. 120° eine maximale Höhe auf, so dass das obere Abschlussteil 8 dort ebenfalls eine maximale Höhe über dem Mischboden 5 aufweist. Im weiteren Verlauf in Rotationsrichtung A, und zwar über einen Winkelbereich von etwa weiteren (90° bis) 120°, reduziert sich die Höhe der Seitenwand 7 der Mischkammer 4 dann allmählich stetig auf lediglich noch etwa 50% ihrer maximalen Höhe; und dementsprechend nimmt über den besagten zweiten Winkelbereich auch die auf den Mischboden 5 bezogene Höhe des oberen Abschlussteils 8, welches sich aufgrund des Durchbruchs 10 dort auf einen sich entlang der oberen Kante 12 der Seitenwand 7 erstreckenden Streifen 13 beschränkt, dessen radiale Erstreckung etwa 15% des Radius' der Seitenwand 7 beträgt, ebenfalls stetig ab. Bei dem - in Rotationsrichtung A betrachtet - Beginn 14 der Austrittsöffnung 9 hat das obere Abschlussteil 8 demgemäß etwa nur noch 50% seiner maximalen Höhe über dem Mischboden 5.The
Die Austrittsöffnung 9 erstreckt sich über einen Winkelbereich von etwa 45°, d.h. über etwa ein Drittel des Winkelbereichs, innerhalb dessen sich die Höhe von Seitenwand 7 und oberem Abschlussteil 8 in der vorstehend beschriebenen Weise reduziert. Die die Austrittsöffnung nach oben hin begrenzende Kante 15 steigt anschließend an den Beginn 14 der Austrittsöffnung nicht sprunghaft, sondern vielmehr allmählich an, so dass die Höhe der Austrittsöffnung 9 über dem Mischboden 5 über einen Winkelbereich in Drehrichtung A des Mischbodens 5 zunimmt. Die maximale Höhe der Austrittsöffnung 9 und die geringste Höhe des oberen Abschlussteils 8 über dem Mischboden 5 entsprechen dabei einander im Wesentlichen.The
In die Mischkammer 4 mündet weiterhin eine Flüssigkeits-Förderstrecke, mit welcher zum Zwecke der Befeuchtung des (zunächst trockenen) Streustoffs in der Mischkammer in diese Flüssigkeit eingebracht wird. Hierzu dient das Sprührohr 16 mit in der Mischkammer angeordneten Sprühöffnungen 17. Letztere besorgen eine Aufteilung des in die Mischkammer 4 eingetragenen Flüssigkeitsstromes in zwei Teilströme, von denen einer nach außen, d.h. in Richtung auf die Seitenwand 7 der Begrenzung 6 der Mischkammer 4 gerichtet ist und der andere nach innen. Das Sprührohr 16, welches am, in Drehrichtung A betrachtet, hinteren Abschluss des Durchbruchs 10 der Begrenzung 6 der Mischkammer 4 mittels eines Halteblechs 19 an deren oberen Abschlussteil 8 fixiert ist, befindet sich - bei der dargestellten Stellung ("asymmetrisch links") der Begrenzung 6 der Mischkammer - in Drehrichtung A des Mischbodens 5 betrachtet etwa 150° hinter der Schütte 11. Von dem Sprührohr 16 ab erstreckt sich, bis zum etwa gegenüberliegenden Beginn des Durchbruches 10, das obere Abschlussteil 8 in radialer Richtung von der Seitenwand 7 der Mischkammer 4 bis im Wesentlichen zur Rotationsachse 1 des Mischbodens, d.h. der Nabe 18, so dass über etwa den halben Umfang die Mischkammer nach oben hin im Wesentlichen abgeschlossen ist. Über diesem Bereich ist die Begrenzung 6 der Mischkammer 4 an der Nabe 18 um die Achse 1 verdrehbar gelagert.In the mixing
Zu erkennen sind in den
Claims (18)
- A spreading apparatus, in particular for winter road maintenance vehicles, for scattering spreading material, comprising a spreading material container, a scattering unit and a spreading material conveying section, which is arranged between the spreading material container and the scattering unit, the scattering unit having a rotating spreading plate (3) and a central mixing chamber (4), into which the spreading material conveying section issues and which comprises a rotating mixing floor (5) and a nonrotating boundary (6) with a side wall (7), which extends around the rotation axis (1) of the mixing floor and has an outlet opening (9), and with an upper terminating part (8),
characterised in
that the height of the upper terminating part (8) above the mixing floor (5) changes in the circumferential direction, at least adjacently to the side wall (7). - The spreading apparatus according to claim 1, characterised in that the height of the upper terminating part (8) decreases continuously over an angle range immediately before the outlet opening (9) in the rotation direction (A) of the mixing floor (5).
- The spreading apparatus according to claim 2, characterised in that the angle range is at least equal to, preferably at least approximately twice the size of the extent of the outlet opening (9) in the circumferential direction.
- The spreading apparatus according to claim 2 or 3, characterised in that the angle range is between 80° and 160°, preferably between 95° and 145°.
- The spreading apparatus according to any one of claims 1 to 4, characterised in that the maximum height of the upper terminating part (8) above the mixing floor (5) is at least 50 %, preferably at least approximately 80 % greater than the lowest height.
- The spreading apparatus according to any one of claims 1 to 5, characterised in that the height of the outlet opening (9) is substantially lower than the maximum height of the upper terminating part (8) above the mixing floor (5), particularly preferably no more than 50 % of the maximum height of the upper terminating part above the mixing floor.
- The spreading apparatus according to any one of claims 1 to 6, characterised in that the lowest height of the upper terminating part (8) above the mixing floor (5) is at most an insignificant amount greater than the maximum height of the edge (15) delimiting the top of the outlet opening (9) above the mixing floor.
- The spreading apparatus according to any one of claims 1 to 7, characterised in that the height of the outlet opening (9) above the mixing floor (5) increases continuously over an angle range in the rotation direction (A) of the mixing floor.
- The spreading apparatus according to any one of claims 1 to 8, characterised in that the side wall (7) has a substantially cylindrical basic shape.
- The spreading apparatus according to claim 9, characterised in that the radial extent of the upper terminating part (8) in the region in which its height above the mixing floor (5) changes is at least 15 % of the radius of the cylindrical basic shape of the side wall (7).
- The spreading apparatus according to any one of claims 1 to 10, characterised in that the boundary (6) of the mixing chamber (4) is rotatable to a limited extent, preferably about the rotation axis (1) of the mixing floor (5).
- The spreading apparatus according to claim 11, characterised in that a deflector (23), which can be rotated together with the boundary (6) of the mixing chamber (4), is attached to said boundary.
- The spreading apparatus according to any one of claims 1 to 12, characterised in that a liquid conveying section issues into the mixing chamber, preferably between 45° and 155° behind the exit of the spreading material conveying section in the rotation direction (A) of the mixing floor (5).
- The spreading apparatus according to claim 13, characterised in that the upper terminating part (8) in some regions, preferably immediately behind where the liquid conveying section issues into the mixing chamber (4) in the rotation direction (A) of the mixing floor (5), extends from the side wall (7) substantially as far as the rotation axis (1) of the mixing floor.
- The spreading apparatus according to claim 13 or 14, characterised in that the exit part of the liquid conveying section is fixed to the upper terminating part (8) of the mixing chamber (4).
- The spreading apparatus according to any one of claims 13 to 15, characterised in that the liquid flow that is introduced into the mixing chamber (4) by means of the liquid conveying section is divided in the region of the exit of the liquid conveying section into at least one jet that is directed outwards against the side wall (7) of the boundary (6) of the mixing chamber (4) and one jet that is directed inwards.
- The spreading apparatus according to any one of claims 1 to 16, characterised in that the radius of the mixing floor (5) is between 30 % and 70 % of the radius of the spreading plate (3).
- The spreading apparatus according to any one of claims 1 to 17, characterised in that the mixing floor (5) merges radially inwards into a core (20) of substantially truncated cone shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL12723615T PL2718505T3 (en) | 2011-06-08 | 2012-05-23 | Spreader device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011106086A DE102011106086A1 (en) | 2011-06-08 | 2011-06-08 | spreader |
| PCT/EP2012/002187 WO2012167874A1 (en) | 2011-06-08 | 2012-05-23 | Spreader device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2718505A1 EP2718505A1 (en) | 2014-04-16 |
| EP2718505B1 true EP2718505B1 (en) | 2015-07-29 |
Family
ID=46168403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12723615.6A Active EP2718505B1 (en) | 2011-06-08 | 2012-05-23 | Spreader device |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2718505B1 (en) |
| DE (1) | DE102011106086A1 (en) |
| DK (1) | DK2718505T3 (en) |
| PL (1) | PL2718505T3 (en) |
| WO (1) | WO2012167874A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106149617B (en) * | 2015-04-28 | 2019-02-26 | 徐工集团工程机械股份有限公司 | A kind of spreading mechanism and snow-removing spreading machine |
| DE102015117151A1 (en) * | 2015-10-08 | 2017-04-13 | Aebi Schmidt Nederland Bv | Winter gritting equipment |
| CN110847109A (en) * | 2019-12-09 | 2020-02-28 | 瑞德(新乡)路业有限公司 | A snow-melting agent spreader evenly spreads device |
| DE102020116598A1 (en) | 2020-06-24 | 2021-12-30 | Aebi Schmidt Nederland Bv | Winter service spreader |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3050355C2 (en) * | 1980-09-19 | 1984-03-29 | Willy 7715 Bräunlingen Küpper | Spreading device for granulated and liquid thawing substances |
| DE3544060A1 (en) * | 1985-12-13 | 1987-06-19 | Willy Kuepper | Spreading device with liquid supply for spreading moistened granulates |
| DE10328913B3 (en) * | 2003-06-26 | 2005-03-24 | Schmidt Holding Gmbh | spreader |
| DK176222B1 (en) | 2003-10-07 | 2007-03-05 | Epoke As | Spreading arrangement for a weighing machine for spreading a mixture of granulated material and a liquid as well as a weighing machine comprising such a spreading apparatus |
| DE102006055270A1 (en) * | 2006-11-23 | 2008-05-29 | Schmidt Holding Gmbh | Spreader for mounting on a carrier vehicle |
| ITTO20060934A1 (en) | 2006-12-29 | 2008-06-30 | Giletta Spa | SPREADING UNIT FOR A VEHICLE SPINNING OF REBUFFER MATERIALS |
-
2011
- 2011-06-08 DE DE102011106086A patent/DE102011106086A1/en not_active Withdrawn
-
2012
- 2012-05-23 DK DK12723615.6T patent/DK2718505T3/en active
- 2012-05-23 PL PL12723615T patent/PL2718505T3/en unknown
- 2012-05-23 EP EP12723615.6A patent/EP2718505B1/en active Active
- 2012-05-23 WO PCT/EP2012/002187 patent/WO2012167874A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011106086A1 (en) | 2012-12-13 |
| PL2718505T3 (en) | 2016-01-29 |
| DK2718505T3 (en) | 2015-09-07 |
| EP2718505A1 (en) | 2014-04-16 |
| WO2012167874A1 (en) | 2012-12-13 |
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