HUE026964T2

HUE026964T2 - Spread unit for spreading granular material

Info

Publication number: HUE026964T2
Application number: HUE12799604A
Authority: HU
Inventors: Enzo Giletta
Original assignee: Giletta Spa
Priority date: 2011-10-18
Filing date: 2012-10-18
Publication date: 2016-08-29
Also published as: RU2604610C2; PL2769020T3; RU2014119868A; HRP20151388T1; WO2013057693A1; SI2769020T1; ITTO20110937A1; DK2769020T3; CA2852854A1; US20140246523A1; EP2769020A1; EP2769020B1

Abstract

In a spread unit (1), a granular material, preferably anti-icing, arranged inside a hopper container (5), is fed towards a spread device (10) by a feed assembly (12) with a fixed support surface (14) arranged in a position facing an outlet (9) of the container (5) and a belt dosing device (13) arranged downstream of the fixed surface (14) and on the outlet (9) side for receiving the material from the fixed surface (9) and dosing it before sending it to the spread device (10).

Description

TECHNICAL FIELD

[0001] The present invention relates to a spread unit for spreading granular material. In particular, the present invention relates to a spread unit for spreading anti-icing granular material to be distributed on extended surfaces such as, e.g., pavings in general, street surfaces, parking lots, harbour and airport areas, to which the following disclosure will explicitly refer without however being less general.

BACKGROUND ART

[0002] The use of spread units is known for spreading anti-icing granular material, each comprising a hopper container accommodating a mass of such material and having a lower opening, a spread device and a feed conveyor adapted to receive the material flowing out from said opening and to move it towards the spread device.

[0003] The known units of the above-described type are not very satisfactory, especially concerning the distribution uniformity of the anti-icing material.

[0004] The above disclosure is essentially attributable to the particular embodiment of known feed conveyors, which discontinuously feed the material, in some cases, due to the friction that is generated between the material and the fixed parts of the conveyor and, in other cases, due to the inevitable deformation of components of the conveyor itself under the weight of the material in the container.

[0005] Moreover, in both cases, many of the parts forming the conveyors wear out in relatively short time. Spread units for spreading granular material are known from US 3583646A, US 5 170 948 A and GB 650 390 A.

DISCLOSURE OF INVENTION

[0006] The object of the present invention is to make a spread unit, which allows the above-mentioned problems to be solved in a simple and cost-effective manner.

[0007] According to the present invention, a spread unit is made for spreading granular material as claimed in claim 1.

BRIEF DESCRIPTION OF THE DRAWING

[0008] The invention will now be described with reference to the accompanying drawing, which shows a perspective view having parts removed for clarity of a preferred, non-limiting embodiment of a spread unit for spreading granular material made according to the dictates of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

[0009] In the accompanying figure, numeral 1 indicates a spread unit for spreading granular material as a whole, such as for example an anti-icing saline substance, on an extended surface 2 such as e.g. a paving in general, a street surface, a parking lot, a harbour or airport area, etc.

[0010] The unit comprises a frame 3 adapted to be connected, for example to a self-propelled unit 4 (partially shown), and a container 5 for the granular material and supported by frame 3.

[0011] Container 5 comprises a front frontal wall 6, a rear frontal wall 7 and two side walls 8 (only one of which is seen in the accompanying drawing), which converge towards each other and downwards to define, with the frontal walls 6, 7, an outlet 9 which is elongated in a longitudinal direction A.

[0012] Again with reference to the accompanying figure 1, unit 1 also comprises a disk spreader 10, in itself known and not described in detail, for distributing the granular material over the above-mentioned extended surface 2, and a conveyor and dosing assembly 11 for feeding the material in the longitudinal direction A and generating a homogeneous and continuous flow of material towards spreader 10.

[0013] Theconveyoranddosingassembly 11 comprises a blade conveyor 12, which extends in a facing position and basically for the entire length of opening 9, for supporting - without deforming it the material housed in container 5 and gradually flowing out from opening 9, and a belt dosing device 13 arranged downstream of conveyor 12 in the material feed direction A and on the side of opening 9, for receiving the material from the blade conveyor 12 and sending it to spreader 10.

[0014] The blade conveyor 12 comprises a flat rigid wall 14 facing opening 9 and stably connected to frame 3 so as to close opening 9, and a blade catenary 15 for translating the granular material deposited on wall 14 in the longitudinal direction A.

[0015] Catenary 15 comprises two drag chains 16, which are transversally distanced from each other and are wound ringwise on end roller deviating bodies 16,18 having respective toothed mesh pulleys of the respective drag chains 16. The pulleys are keyed onto end sections of respective shafts 16a, 18a, which are arranged at longitudinal parts opposite to wall 14 and rotatably about respective axes 16b and 18b, which are parallel to each other and to wall 14 and are orthogonal to direction A.

[0016] In the particular embodiment described, shaft 16a is motorised and is arranged downstream of the frontal wall 7 in an inlet 10a of spreader 10.

[0017] Catenary 15 further comprises a plurality of blades 19, which are orthogonal and integrally connected to the chains 16 to slidingly cooperate with the upper surface 14a of wall 14 and feed the material past the frontal wall 7 through an opening or passageway 20 obtained in the frontal wall 7.

[0018] Again with reference to the accompanying figure, the dosing device 13 comprises a flexible belt 21, which is conveniently made of polymeric or other similar material, which is wound ringwise about a longitudinal pair of end deviating rollers 23 and 24, which are parallel to each other and to the axes 16b, 18b of the shafts 16, 18. Of the rollers 23 and 24, roller 23 is keyed onto the intermediate section of shaft 16a between the related toothed pulleys, while roller 24 is arranged below and substantially at the frontal wall 7 or at passageway 20. The rollers 23 and 24 divide belt 21 into a delivery branch 21a and a return branch 21b; the delivery branch 21a is substantially coplanar to the upper surface 14a of wall 14, to which it is conveniently joined by a plate portion 26, and is arranged tangent to blade 19 to define, with the blades 19, some pockets 27 housing predefined masses of material.

[0019] Since catenary 15 and belt 21 are coupled to the same shaft 16a in angularly fixed positions, the delivery branch 21a and the blades 19 translate in direction A at the same speed whereby the related speed is null between the delivery branch 21 and the blades 19, and the volume of pockets 27 is constant.

[0020] According to a variant not shown, catenary 15 is not coupled to shaft 16a but is wound abouta motorised return shaft of it, again parallel to shaft 18 and arranged upstream of roller 24 and independent from roller 24. Therefore, catenary 15 and belt 21 of the dosing device 13 may be controlled independently from each other, so as to feed the material at different speeds in direction A, depending on the position of the material.

[0021] Again with reference to the accompanying figure, the dosing device 13 also comprises a crushing assembly 29 arranged in a position facing the delivery branch 21 a of belt 21, for crushing the material being fed in conjunction with belt 21 and arranged between the blades 19.

[0022] It is apparent from the above that the particular embodiment of the described conveyor assembly 12 allows the material contained in container 5 to be fed, but especially accurately dosed, whatever the level of the material inside container 5 and, therefore, a continuous and uniform flow to be sent towards inlet 10a of spreader 10.

[0023] The above is essentially subsequent to the fact that the weight of the material housed inside container 5 is basically only supported by the rigid wall 14 arranged below outlet 9 of container 5, while the dosing device 13, which extends past the outlet opening 9 of container 5 supports definitely less weight with respect to the one supported by the fixed wall 14, and specifically, only the weight of the material fed by catenary 15.

[0024] It should also be noted that the weight supported by the dosing device 13 does not vary as the quantity of material housed in containers varies, thus the material is always fed under the same load or stress conditions and this, associated with the lack of related motion with catenary 15, makes it possible to feed a constant flow of material.

[0025] In view of the above-mentioned reasons, it is then possible to make a belt 21 and hence a dosing de vice 13 having an extremely contained longitudinal length with respect to the blade conveyor and hence a unit having an overall longitudinal size which is comparable with the one of known embodiments and, therefore, usable on existing vehicles without the need for structural modifications to be made to the vehicles themselves.

[0026] From the above it is apparent that modifications or variants may be made to described unit 1, without departing from the scope of protection defined by the independent claim.

[0027] In particular, the blade conveyor or the dosing device 13, of which belt 21 may be made with materials other than the one described, may be constructionally different from the ones described by way of example.

[0028] Spreader 10 may also be different from the one described.

Claims 1. A spread unit (1 ) for spreading granular material; the unit (1) comprising a collection compartment (5) for said granular material, a lower outlet opening (9) for the exit of the granular material from said collection compartment (5), convey or and dosing assembly (11) adapted to receive said granular material flowing out from said lower outlet opening (9) and feed it in a longitudinal direction (A); said conveyor and dosing assembly (11) comprise a fixed support surface (14) arranged below said compartment and in a position facing said outlet opening (9) to support the material contained in said compartment (5), transporting means to feed the material arranged on said fixed support surface (14) in said longitudinal direction (A), and belt dosing means (13) arranged downstream of the fixed support surface (14) and of said opening in said longitudinal direction (A); characterized in that said belt dosing means (13) comprise a mobile transport surface adapted to receive the material arranged on said fixed support surface (14), said mobile transport surface moving in said longitudinal direction (A) and being substantially coplanar with said fixed support surface (14); said transporting means (12) moving said material on said mobile transport surface ; said transporting means (12) and said mobile surface translate in said longitudinal direction (A) at a same translation speed; said transport means (12) extending above said mobile transport surface to define with said mobile surface at least one pocket (27) adapted to house a defined portion of said material; said dosing means (13) comprising a motorised conveyor belt having a belt (21) wound ringwise on two first end deviating rollers (23, 24); a mobile delivery branch (21a) of said belt defining said mobile transport surface; and said transporting means comprising a motorised blade conveyor (12) wound ringwise on two second end deviating rollers (16a, 18a); at least one of said first rollers (24) being arranged between said second rollers and the other of said first rollers extending downstream of said compartment (5). 2. The unit according to claim 1, characterised in that one of said first rollers (23) extends coaxially to one of said second rollers (16a). 3. The unit according to claim 1 or 2, characterised in that said blade conveyor (12) com prises two drawing chains (16) surrounding partially said motorised belt conveyor. 4. The unit according to any of the preceding claims, characterised by also comprising spreading means (10) separate from said dosing means (13) and arranged downstream of the dosing means (13) to spread the material dosed by said dosing means. 5. The unit according to any of the preceding claims, characterised in that said compartment (5) is defined by a container having a wall (7) transversal to said longitudinal direction (A) and provided with a through-opening (20), and in thatsaid dosing means (13) extend downstream of said container through said through-opening (20). 6. The unit according to claim 1, characterised by also comprising grinding means (29) arranged in a position facing said mobile transporting surface (21a).

Patentansprüche 1. Streueinheit (1) zum Streuen von gekörntem Material; wobei die Streueinheit (1) eine Sammelkammer (5) zum Aufnehmen des gekörnten Materials, eine untere Auslassöffnung (9) für eine Ausgabe des gekörnten Materials aus der Sammelkammer (5) und eine Förder- und Dosiereinrichtung (11) aufweist, welche für eine Aufnahme des aus der unteren Auslassöffnung (9) ausströmenden gekörnten Materials und für eine Zuführung desselben in einer Längsrichtung (A) ausgebildet ist; wobei die Förder- und Dosiereinrichtung (11) eine feste Trägerfläche (14), welche unterhalb der Sammelkammer und in einer der Auslassöffnung (9) gegenüberliegenden Position angeordnet ist, um das in der Sammelkammer (5) enthaltene Material zu tragen, Transportmittel zum Fördern des auf der festen Trägerfläche (14) angeordneten Materials in der Längsrichtung (A) und Banddosiermittel (13) aufweist, welche stromabwärts der festen Trägerfläche (14) und der Öffnung in der Längsrichtung (A) angeordnet sind; dadurch gekennzeichnet, dass die Banddosiermittel (13) eine mobile Transportoberfläche aufweisen, welche zum Aufnehmen des Materials angepasst ist, das auf der festen Trägerfläche (14) angeordnet ist, wobei die mobile Transportfläche entlang der Längsrichtung (A) bewegbar und im Wesentlichen kopla-nar zu der festen Trägerfläche (14) ausgebildet ist; wobei die Transportmittel (12) das Material auf der mobilen Transportfläche bewegen; wobei die Transportmittel (12) und die mobile Fläche in der Längsrichtung (A) mit derselben Vorschubgeschwindigkeit vorschieben; wobei die Transportmittel (12) sich oberhalb der mobilen Transportfläche erstrecken, um mit der mobilen Fläche wenigstens eine Tasche (27) zu definieren, welche zum Aufnehmen einer bestimmten Menge des Materials ausgebildet ist; wobei die Dosiermittel (13) ein motorbetriebenes Förderband mit einem Band (21) aufweisen, welches ringartig auf zwei an ersten Enden vorgesehenen Umlenkrollen (23, 24) gewickelt ist; wobei ein mobiler Zuführzweig (21a) des Förderbands die mobile Transportfläche definiert; und wobei die Transportmittel einen motorbetriebenen Klingenförderer (12) aufweisen, welcher ringartig auf zwei an zweiten Enden vorgesehenen Umlenkrollen (16a, 18a) gewickelt ist; wobei wenigstens einer der ersten Umlenkrollen (24) zwischen den zweiten Umlenkrollen und der übrigen der ersten Umlenkrollen angeordnet ist und sich stromabwärts der Sammelkammer (5) erstreckt. 2. Einheit nach Anspruch 1, dadurch gekennzeichnet, dass eine der ersten Umlenkrollen (23) sich koaxial zu einer der zweiten Umlenkrollen (16a) erstreckt. 3. Einheit nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Klingenförderer (12) zwei Zugketten (16) aufweist, welche teilweise das motorbetriebene Förderband umgeben. 4. Einheit nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Einheit ferner Verteilmittel (10) aufweist, welche von den Dosiermitteln (13) getrennt und stromabwärts der Dosiermittel (13) angeordnet sind, um das Material zu verteilen, welches mittels den Dosiermitteln dosiert ist. 5. Einheit nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sammelkammer (5) durch einen Behälter definiert ist, welcher eine Wand (7) aufweist, die quer zu der Längsrichtung (A) ausgerichtet und mit einer Durchgangsöffnung (20) versehen ist, und dass die Dosiermittel (13) sich stromabwärts des Behälters durch die Durchgangsöffnung (20) hindurch erstrecken. 6. Einheit nach Anspruch 1, dadurch gekennzeichnet, dass die Einheit ferner Zerkleinerungsmittel (29) aufweist, welche in einer Position gegenüber- liegend der mobilen Transportfläche (21a) angeordnet sind.

Revendications 1. Unité d’épandage (1) destinée à épandre une matière granulaire ; l’unité (1) comprenant un compartiment collecteur (5) pour ladite matière granulaire, une ouverture de sortie inférieure (9) pour la sortie de la matière granulaire dudit compartiment collecteur^), un ensemble convoyeur et doseur (11) apte à recevoir ladite matière granulaire qui s’écoule de ladite ouverture de sortie inférieure (9) et à l’entraîner dans une direction longitudinale (A) ; ledit ensemble convoyeur et doseur (11) comprend une surface support fixe (14) agencée au-dessous dudit compartiment et dans une position qui fait face à ladite ouverture de sortie (9) pour supporter la matière contenue dans ledit compartiment (5), des moyens transporteurs destinés à entraîner la matière disposée sur ladite surface support fixe (14) dans ladite direction longitudinale (A), et des moyens doseurs à courroie (13) agencés en aval de la surface support fixe (14) et de ladite ouverture dans ladite direction longitudinale (A), caractérisé en ce que lesdits moyens doseurs à courroie (13) comprennent une surface de transport mobile apte à recevoir la matière disposée sur ladite surface support fixe (14), ladite surface de transport mobile se déplaçant dans ladite direction longitudinale (A) et étant sensiblement dans le même plan que ladite surface support fixe (14) ; lesdits moyens transporteurs (12) déplaçant ladite matière sur ladite surface de transport mobile ; lesdits moyens transporteurs (12) et ladite surface mobile se déplaçant en translation dans ladite direction longitudinale (A) à la même vitesse de translation ; lesdits moyens de transport (12) s’étendant au-dessus de ladite surface de transport mobile pour définir avec ladite surface mobile au moins une poche (27) apte à contenir une portion définie de ladite matière ; lesdits moyens doseurs (13) comprenant une courroie de convoyeur motorisée qui comprend une courroie (21) enroulée en boucle sur deux rouleaux déflecteurs de première extrémité (23, 24) ; une branche débitrice mobile (21 a) de la dite courroie définissant ladite surface de transport mobile ; et lesdits moyens transporteurs comprenant un transporteur à lames motorisé (12) enroulé en boucle sur deux rouleaux déflecteurs de seconde extrémité (16a, 18a) ; au moins un desdits premiers rouleaux (24) étant agencé entre lesdits seconds rouleaux et l’autre desdits premiers rouleaux s’étendant en aval dudit compartiment (5). 2. Unité selon la revendication 1, caractérisée en ce qu’un desdits premiers rouleaux (23) s’étend coaxialement à un desdits seconds rouleaux (16a). 3. Unité selon la revendication 1 ou 2, caractérisée en ce que ledit convoyeur à lames (12) comprend deux chaînes d’entraînement (16) qui entourent partiellement ledit convoyeur à courroie motorisé. 4. Unité selon une des revendications précédentes, caractérisée en ce qu’elle comprend en outre des moyens d’épandage (10) séparés desdits moyens doseurs (13) et agencés en aval desdits moyens doseurs (13) pour épandre la matière dosée par lesdits moyens doseurs. 5. Unité selon une quelconque des revendications précédentes, caractérisée en ce que ledit compartiment (5) est défini par récipient ayant une paroi (7) transversale à ladite direction longitudinale (A) et munie d’une ouverture traversante (20), et en ce que lesdits moyens doseurs (13) s’étendent en aval dudit récipient à travers ladite ouverture traversante (20). 6. Unité selon la revendication 1, caractérisée en ce qu’elle comprend en outre des moyens broyeurs (29) agencés dans une position qui fait face à ladite surface transporteuse mobile (21 a).

REFERENCES CITED IN THE DESCRIPTION

This list of references cited by the applicant is for the reader’s convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

Patent documents cited in the description • US 3583646 A [0005] • US 5170948 A [0005] • GB 650390 A [0005]

Claims

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1, Hemorrhoids (1) grsnyphium mfaase, where the hernia (1) for the ghetto tree has a hornbeam ($) "Thanks, and the lower, ayffa (S> and lower gate opening (9) of the granule from the carp (S)). ) the chamomile granulate is bafegsóó, ioszbubn (A) is a feeder, carrier and adsorption skeleton (11), and the carrier and adsorbent urine (11) is placed on a piffer carrier (14), all under the container, and the cleft opening (etc.) ) looks at the wall and pushes the strainer (§) straodazate granulate, and also has a water supply or other, as long as it serves the longitudinal (A) of the fastener têmmzXéMQMm (44) siransfatatt gtmsÊêfcm (Ia) has a < tb > & ) s mas az az az az az íts íts d d d d d d d)))))))))))))))) és és és és és és és és és és és It is to be understood that the tape dispensing portion (13) is shrunken by the cutting edge granule (14). there is a mobile mobile station wall (A) moving in the tmaas script (A), which has a fixed support surface (14) in its daughters in a plane plane; the conveyor (12) is the granulate of the Mohi refinishing plant; and the conveyor (12) and the mobile conveyor are longitudinally (A) sgysnasvoosl of the same milling depth; and the carrier (12) overlies the mobile pickup in its feeder cable, as you get the socket (27) used to feed the defined slit of the granule due to the mobile horn & and the belt dispenser (13) is annealed with a motor conveyor belt, the ribbon (21) of which is folded around the bottom end vane roller (23, 24); and a tape having a mobile fiber-bearing chamfer mobile dispensing arm (21a); furthermore, the slurry is motorized. a knife conveyor belt (12), which is rotatably deflected at the end of a furrow roller (IS, Itta); and the more advanced the rollers (24) are the second roller and lower roller blades a. there is a slmodazvs after another snowfall (S).

Claim 1 is a tailor-made hair size, with the Yankee being coaxially coaxial with the second rollers (16a) of the lower rollers (23). 3. te 1 or 2, Claims sideline spray, with jfa / femszvs, leaves the conveyor belt (12) two motor conveyors conveyed with a chain link (16),

4, the hollow claims of any kind of spraying spray, with a jaffemade, leaving the granules delivered by the dosage unit dispersed in a scattering spray (10), which is discharged from the dispensing unit (13), and the dosage unit (13) is alright in its box,

3, The Humble Demanding Fleshy Saddle Spreading Size, -mami Jaasmazuá, as the wall (7) of the ridge (7) is perpendicular to the longitudinal direction (A), and the transverse passage (20) is visible, and the dose range (13) is more or less after the hold, it is routed through diet (20). 6, 1, Clause Szshnt's hair size, with the aim that the wall of the mobile carrier (21a) has an aliasing blade (20) of airsncfezat (20).