EP3228393A1 - Screening device - Google Patents

Screening device Download PDF

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Publication number
EP3228393A1
EP3228393A1 EP17000393.3A EP17000393A EP3228393A1 EP 3228393 A1 EP3228393 A1 EP 3228393A1 EP 17000393 A EP17000393 A EP 17000393A EP 3228393 A1 EP3228393 A1 EP 3228393A1
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EP
European Patent Office
Prior art keywords
rotary tube
bearing
shaft
sieve
screening device
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Granted
Application number
EP17000393.3A
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German (de)
French (fr)
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EP3228393B1 (en
Inventor
Heinz Backers
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Backers Maschinenbau GmbH
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Backers Maschinenbau GmbH
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Publication of EP3228393A1 publication Critical patent/EP3228393A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens

Definitions

  • the invention relates to a screening device, with at least one on one frame mounted on one side, rotating, elongated sieve member. Moreover, the invention relates to a screening machine with Sieborgan.
  • Star screens are used to screen construction debris, loamy soil and other bulk materials. These must be protected from large, heavy chunks. To this end, bar grates, gratings or vibrato grinders have been used as pre-separators. Because it also sieves cohesive material, a pre-separator of the known type can easily clog.
  • Object of the present invention is to provide a screening device with high load capacity of the one-sided mounted sieve organs.
  • the provided for solving the task screening device has the features of claim 1.
  • the Sieborgan on shaft, bearing tube and rotary tube wherein the bearing tube fixedly held on the frame, the shaft mounted in the bearing tube and the rotary tube is connected to the shaft.
  • the rotary tube is provided in relation to the shaft radially outside and has contact with the screenings. The forces are transmitted from the bearing tube to the frame.
  • the connection from the bearing tube to the frame is designed accordingly.
  • the rotary tube covers the bearing tube at least partially.
  • the rotary tube extends on the bearing tube as far as possible to the frame zoom. As a result, the bearing tube is protected by the rotary tube.
  • the rotary tube is designed in several parts, at least with an axially outer rotary tube part and an axially inner rotary tube part, wherein the shaft is preferably connected to the outer rotary tube part and the inner rotary tube part covers the bearing tube at least partially.
  • the bearing tube sits in an annular gap between the shaft and inner rotary tube.
  • the inner rotary tube part is formed with a slightly larger outer diameter than the outer rotary tube part. It is also possible a design with more than two rotary tube parts, such as with an additional middle rotary tube part.
  • the shaft protrudes into the outer rotary tube part with an end-side shaft section or with a shaft end.
  • the end shaft portion is connected by at least one pin or bolt to the outer rotary tube part.
  • the radially directed pin transmits the torque of the shaft to the rotary tube or to the outer rotary tube part.
  • at least two pins or bolts are provided, of which extends in particular one through a hole in the end shaft portion. Another pin or bolt may be held in an end groove of the shaft portion.
  • the outer rotary tube part is supported on the end shaft portion.
  • the rotary tube parts are screwed together via pipe flanges, in particular with a radially outwardly directed flange on the outer rotary tube part.
  • the inner rotary tube part is provided for this purpose corresponding to a radially inwardly directed flange.
  • the latter flange can extend up to the shaft and thus seals the annular gap between the inner rotary tube and the shaft.
  • the rotary tube has externally arranged, axially directed (and radially projecting) webs.
  • axially directed webs are provided on the outer rotary tube part and on the inner rotary tube part, with fewer webs being present on the inner rotary tube part than on the outer rotary tube part, in particular.
  • the number of webs has a ratio of 1 to 2. For example, 4 to 8 webs are arranged on the inner rotary tube part and 8 to 16 webs on the outer rotary tube part.
  • the shaft is mounted at least twice in the bearing tube, in particular at both ends of the bearing tube.
  • the shaft is supported within an area defined by the frame.
  • the bearing tube is held in a receiving plate of the frame, wherein the receiving plate is directed in particular obliquely, with a lower portion which is inclined to the rotary tube.
  • the lower portion of the receiving plate which is in particular part of the frame, thus has an acute angle to the rotary tube, while an upper portion forms an obtuse angle to the rotary tube.
  • the bearing tube with an upper bearing plate on the outside of the receiving plate and with a lower bearing plate inside of the receiving plate.
  • the lower bearing plate faces the rotary tube while the upper bearing plate faces a shaft end outside the region defined by the frame.
  • the two bearing plates are preferably provided with triangular support plates for supporting on the outer circumference of the bearing tube. Bearing plates, support plates and bearing tube are preferably fixedly connected to each other, in particular welded.
  • intermediate plates are provided between the receiving plate and the bearing plate, in particular of a softer material than the bearing plates and the receiving plate.
  • the intermediate plates are larger than the bearing plates. This results in a better distribution of force on the Receiving plate.
  • the softer material has a yielding damping effect on occurring load peaks.
  • the shaft protrudes with a shaft end out of the bearing tube, a drive sprocket being fastened on this shaft end.
  • the drive sprocket thus lies outside the frame or on the side facing away from the screen element of the receiving plate.
  • several sieve organs are arranged in a common sieve plane, wherein laterally additional sieve elements are preferably provided above the sieve plane. This results in a funnel-shaped arrangement of the sieve organs.
  • the sieve members are provided parallel to each other or in a splayed arrangement, with a larger gap to a discharge side.
  • the dispensing side opposite, ie in the region of the receiving plate, the sieve organs then have smaller distances to each other.
  • the frame is provided with a chute or a chute plate which covers a part of the rotary tube.
  • the chute plate protects bearing and shaft.
  • the screen member is cylindrical or conical. Also, an outer peripheral surface may be formed crowned.
  • the sieve member is equipped with rings, spirals, scratches or drivers.
  • the strainer can also be outwardly smooth.
  • the rings, spirals, scratches or drivers adjacent sieve organs are arranged in a gap to each other. This results in a more uniform surface for the screenings.
  • the frame is adjustable in its position, such that the sieve element or a sieve plane is adjustable in the inclination relative to the horizontal.
  • the screen level can be adjusted inclined to the discharge side, so that slipping too coarse screenings from the screen level.
  • a plurality of screening elements are provided, which can be driven in the same direction. Also possible are several Sieborgane with different directions of rotation.
  • the sieve member is hydraulically driven, wherein preferably the hydraulic pressure is monitored, so that when a limit value is exceeded, the sieve member is stopped or driven in the opposite direction.
  • the screen element is driven in opposite directions only for a defined period of time and then rotates again in the original direction of rotation.
  • the subject matter of the invention is also a screening machine with at least one sieve and one feed bunker and with a sieve device according to the invention, as explained above, the sieve device being provided in particular as a coarse sieve above the feed bin.
  • the screening machine on a chassis and a screen with rotating Sieborganen and with a conveyor belt for screened screenings (fine grain).
  • FIG. 1 shown is a screening machine 20 for the screening of debris, soil, soils and / or crops.
  • Components of the screening machine 20 are here a star screen 21 (or disc screen), a conveyor belt 22 for coarse grain, a conveyor belt 23 for fine grain, a crawler chassis 24, a drive 25, a support frame 26 and a feed bunker 27.
  • a screening device 28th arranged as a coarse sieve. The screening device 28 is to remove larger, solid chunks from the bulk material supplied before the bulk material passes into the feed bin 27.
  • the screening device 28 is provided with a plurality of elongated, obliquely downward sieve members and also open at an obliquely downward end face 29, so that larger, solid chunks, which can not pass through the sieve organs, fall obliquely downward over the end face 29 of the screening device 28 can. Only smaller chunks pass through the distances between the sieve organs and into the feed bunker 27.
  • FIG. 2 shows the screening device 28 with a view into the provided as a discharge side end face 29 inside. Visible are four arranged in a common plane of the sieve rotary straws 30, 31, 32, 33 as Sieborgane. These are substantially cylindrical, aligned parallel to each other and have the same distances to each other, namely sieve gaps 34. Similarly wide sieve gaps 35, 36 are provided between the outer rotary tubes 30, 33 and stationary sieve bars 37, 38 adjacent thereto. The latter act as lateral boundaries.
  • the rotary tubes 30 to 33 and sieve bars 37, 38 are held on a frame 39.
  • Components thereof include obliquely directed side walls 40, 41, a rear, obliquely directed receiving plate 42, a chute 43, a rear (drive side) cross member 44, lateral cross braces 45, 46, a (discharge side) cross member 47 at the open end side 29 and lateral support posts 48, 49, also in the region of the open end face 29.
  • the transverse struts 44 to 47 form a lying in a common task plane rectangle above the screen plane formed by the rotary tubes 30 to 33.
  • the rotary tubes 30 to 33 are mounted on one side, namely in the receiving plate 42.
  • a fixed bearing tube 50 is provided with an upper bearing plate 51 and a lower bearing plate 52, which are obliquely directed and offset relative to each other, see in particular FIGS. 7 and 9 ,
  • the bearing tube 50 is inserted through an associated opening 53 in the receiving plate 42, so that the upper bearing plate 51 on the outside (outside the frame) rests against the receiving plate 42, while the lower bearing plate 52 comes to lie on the inside of the receiving plate 42.
  • the bearing plates 51, 52 are not directly on the receiving plate 42 at. Rather, in each case an intermediate plate 54, 55 is provided, see FIG. 4 ,
  • the intermediate plates 54, 55 have essentially two functions.
  • bearing plates 51, 52 are made of a somewhat softer material than the bearing plates 51, 52, are elastic and can thereby temporarily dampen the force peaks acting on the respective bearing tube 50.
  • the intermediate plates 54, 55 are formed somewhat larger than the bearing plates 51, 52, so that the opening 53 is further covered.
  • the bearing plates 51, 52 are each provided with a triangular support plate 56, 57.
  • the bearing tube 50 projects with most of its length in a formed between the receiving plate 42 and the end face screen space 58 into it, while a shorter part of its length projects beyond the receiving plate 42 outwardly.
  • Each rotary tube 30 to 33 is mounted on or in the associated bearing tube 50.
  • a shaft 59 is preferably mounted in two tapered roller bearings 60, 61.
  • the shaft 59 is provided with a drive sprocket 62, which is shown here as a double sprocket.
  • the shaft 59 comes out of the bearing tube 50 with an end shaft portion or a shaft end 63 and is there connected to the respective rotary tube 30 to 33.
  • Each rotary tube 30 to 33 is here formed in several parts in the axial direction, namely with an axially outer rotary tube part 64 and an inner rotary tube part 65.
  • the outer rotary tube part 64 is connected by means of two radially directed pins 66, 67 with the shaft end 63.
  • the pin 66 is firmly inserted into the shaft end 63 and comes to lie in a groove 68 of the outer rotary tubular member 64.
  • the pin 67 is firmly inserted into the outer rotary tube part 64 and comes to lie in an end-side groove 69 of the shaft end 63.
  • the pin 67 is inserted into a bore 70 of the outer rotary tube part 64.
  • the inner rotary tube part 65 is screwed in the axial direction with the outer rotary tube part via pipe flanges.
  • the outer rotary tube part has a radially outwardly directed flange 71 with bores 72.
  • the inner rotary tubular member 65 is provided with a radially inwardly directed flange 73, also with holes 74.
  • the holes 74 are here provided with internal threads and aligned with the holes 72, so that the rotary tubular members 64, 65 are connected to each other by screws.
  • the inner rotary tube part 65 comprises only a portion of the bearing tube 50 and extends almost to the lower bearing plate 52 zoom. In order to prevent the ingress of dirt into the intermediate space between the inner rotary tube part 65 and the bearing tube 50, the chute 43 extends beyond the inner rotary tube part 65. Also, an additional bearing ring or Simmerring be provided.
  • the outer rotary tube part 64 has on its outer side axially extending and radially directed webs 75, preferably about 12 pieces and at equal distances from each other. Deviating from the inner rotary tubular member 65 is preferably provided with a little fewer webs 76, preferably with about 6 pieces and at equal distances from each other, see in particular FIG. 2 , In this case, the inner rotary tube part has a slightly larger outer diameter than the inner rotary tube part 65, so that the webs 76 are arranged radially further outward than the webs 75.
  • the rotary tube parts 64, 65 may be provided with rings 77 or spirals 78, see FIG. 11 .
  • the outer rotary tube part 64 is provided in addition to the webs 65 with rings 67, while the inner rotary tube part 65 has no webs and is instead provided with a spiral 68.
  • a modified embodiment of the screening device 28 show the Figures 5 and 6 ,
  • two further rotary tubes 79, 80 are provided, namely above the sieve plane formed by the rotary tubes 30 to 33 and obliquely above the respective outer rotary tubes 30, 33.
  • the rotary tubes 79, 80 form with the rotary tubes 30, 33 a funnel-shaped formation.
  • the rotary tubes 30 to 33 are driven in the same direction.
  • the drive is hydraulic here. By measuring the hydraulic pressure, the drive can be monitored. If a limit is exceeded, the direction of rotation is reversed.
  • the directions of rotation of the rotary tubes 79, 80 are adapted to the directions of rotation of the rotary tubes 30 to 33 or deviating provided. This also applies to drive control and possible overload protection.
  • the screening device 28 is according to FIG. 1 formed pivotable, so that the downward inclination of the rotary tubes 30 to 33 is variable.
  • the support posts 48, 49 are pivotally mounted on the support frame 26, while the rear cross member 44 is laterally raised or lowered via hydraulic cylinders 81.

Abstract

Eine Siebvorrichtung mit mindestens einem an einem Rahmen einseitig gelagerten, rotierenden, langgestreckten Sieborgan. Erfindungsgemäß weist das Sieborgan Welle, Lagerrohr und Drehrohr auf, wobei das Lagerrohr am Rahmen feststehend gehalten, die Welle im Lagerrohr gelagert und das Drehrohr mit der Welle verbunden sind.A screening device with at least one on one frame mounted on one side, rotating, elongate sieve member. According to the invention, the screen member shaft, bearing tube and rotary tube, wherein the bearing tube fixedly held on the frame, the shaft mounted in the bearing tube and the rotary tube are connected to the shaft.

Description

Die Erfindung betrifft eine Siebvorrichtung, mit mindestens einem an einem Rahmen einseitig gelagerten, rotierenden, lang gestreckten Sieborgan. Außerdem betrifft die Erfindung eine Siebmaschine mit Sieborgan.The invention relates to a screening device, with at least one on one frame mounted on one side, rotating, elongated sieve member. Moreover, the invention relates to a screening machine with Sieborgan.

Zum Sieben von Bauschutt, Lehmböden und anderen Schüttgütern werden unter anderem Sternsiebe verwendet. Diese müssen vor großen, schweren Brocken geschützt werden. Hierzu werden bislang Stangenroste, Gitterroste oder Vibroroste als Vorabscheider eingesetzt. Weil dabei auch bindiges Material gesiebt wird, kann ein Vorabscheider der bekannten Art leicht verstopfen.Star screens are used to screen construction debris, loamy soil and other bulk materials. These must be protected from large, heavy chunks. To this end, bar grates, gratings or vibrato grinders have been used as pre-separators. Because it also sieves cohesive material, a pre-separator of the known type can easily clog.

Aus der EP 1 570 919 A1 ist eine Vorrichtung zum Sortieren von im Wesentlichen festen Materialien bekannt, bei der einseitig gelagerte Spiralwalzen parallel zueinander in einer Ebene vorgesehen sind. Die Spiralwalzen sind auf relativ dünnen Wellen gelagert, so dass eine hohe Knicklast wirkt.From the EP 1 570 919 A1 a device for sorting substantially solid materials is known in which cantilevered spiral rollers are provided parallel to each other in a plane. The spiral rollers are mounted on relatively thin shafts, so that a high buckling load acts.

Aufgabe der vorliegenden Erfindung ist die Schaffung einer Siebvorrichtung mit hoher Belastbarkeit der einseitig gelagerten Sieborgane.Object of the present invention is to provide a screening device with high load capacity of the one-sided mounted sieve organs.

Die zur Lösung der Aufgabe vorgesehene Siebvorrichtung weist die Merkmale des Anspruchs 1 auf. Insbesondere weist das Sieborgan Welle, Lagerrohr und Drehrohr auf, wobei das Lagerrohr am Rahmen feststehend gehalten, die Welle im Lagerrohr gelagert und das Drehrohr mit der Welle verbunden ist. Das Drehrohr ist im Verhältnis zur Welle radial außen vorgesehen und hat Kontakt zum Siebgut. Die auftretenden Kräfte werden vom Lagerrohr auf den Rahmen übertragen. Die Verbindung vom Lagerrohr zum Rahmen ist entsprechend ausgebildet.The provided for solving the task screening device has the features of claim 1. In particular, the Sieborgan on shaft, bearing tube and rotary tube, wherein the bearing tube fixedly held on the frame, the shaft mounted in the bearing tube and the rotary tube is connected to the shaft. The rotary tube is provided in relation to the shaft radially outside and has contact with the screenings. The forces are transmitted from the bearing tube to the frame. The connection from the bearing tube to the frame is designed accordingly.

Nach einem weiteren Gedanken der Erfindung überdeckt das Drehrohr das Lagerrohr zumindest teilweise. Vorzugsweise erstreckt sich das Drehrohr auf dem Lagerrohr soweit wie möglich an den Rahmen heran. Dadurch ist das Lagerrohr durch das Drehrohr geschützt.According to a further aspect of the invention, the rotary tube covers the bearing tube at least partially. Preferably, the rotary tube extends on the bearing tube as far as possible to the frame zoom. As a result, the bearing tube is protected by the rotary tube.

Nach einem weiteren Gedanken der Erfindung ist das Drehrohr mehrteilig ausgebildet, zumindest mit einem axial äußeren Drehrohrteil und einem axial inneren Drehrohrteil, wobei die Welle vorzugsweise mit dem äußeren Drehrohrteil verbunden ist und das innere Drehrohrteil das Lagerrohr zumindest teilweise überdeckt. Das Lagerrohr sitzt dabei in einem Ringspalt zwischen Welle und innerem Drehrohr. Vorzugsweise ist das innere Drehrohrteil mit etwas größerem Außendurchmesser ausgebildet als das äußere Drehrohrteil. Möglich ist auch eine Gestaltung mit mehr als zwei Drehrohrteilen, etwa mit einem zusätzlichen mittleren Drehrohrteil.According to a further aspect of the invention, the rotary tube is designed in several parts, at least with an axially outer rotary tube part and an axially inner rotary tube part, wherein the shaft is preferably connected to the outer rotary tube part and the inner rotary tube part covers the bearing tube at least partially. The bearing tube sits in an annular gap between the shaft and inner rotary tube. Preferably, the inner rotary tube part is formed with a slightly larger outer diameter than the outer rotary tube part. It is also possible a design with more than two rotary tube parts, such as with an additional middle rotary tube part.

Nach einem weiteren Gedanken der Erfindung ragt die Welle mit einem endseitigen Wellenabschnitt bzw. mit einem Wellenende in das äußere Drehrohrteil hinein. Zugleich ist der endseitige Wellenabschnitt durch wenigstens einen Stift oder Bolzen mit dem äußeren Drehrohrteil verbunden. Der radial gerichtete Stift überträgt das Drehmoment der Welle auf das Drehrohr bzw. auf das äußere Drehrohrteil. Vorzugsweise sind wenigstens zwei Stifte oder Bolzen vorgesehen, davon erstreckt sich insbesondere einer durch eine Bohrung im endseitigen Wellenabschnitt. Ein weiterer Stift oder Bolzen kann in einer stirnseitigen Nut des Wellenabschnitts gehalten sein. Vorzugsweise stützt sich das äußere Drehrohrteil auf dem endseitigen Wellenabschnitt ab.According to a further aspect of the invention, the shaft protrudes into the outer rotary tube part with an end-side shaft section or with a shaft end. At the same time the end shaft portion is connected by at least one pin or bolt to the outer rotary tube part. The radially directed pin transmits the torque of the shaft to the rotary tube or to the outer rotary tube part. Preferably, at least two pins or bolts are provided, of which extends in particular one through a hole in the end shaft portion. Another pin or bolt may be held in an end groove of the shaft portion. Preferably, the outer rotary tube part is supported on the end shaft portion.

Nach einem weiteren Gedanken der Erfindung sind die Drehrohrteile über Rohrflansche miteinander verschraubt, insbesondere mit einem radial auswärts gerichteten Flansch am äußeren Drehrohrteil. Vorzugsweise ist das innere Drehrohrteil hierzu korrespondierend mit einem radial einwärts gerichteten Flansch versehen. Der letztgenannte Flansch kann sich bis an die Welle heran erstrecken und dichtet so den Ringspalt zwischen innerem Drehrohr und Welle ab.According to a further aspect of the invention, the rotary tube parts are screwed together via pipe flanges, in particular with a radially outwardly directed flange on the outer rotary tube part. Preferably, the inner rotary tube part is provided for this purpose corresponding to a radially inwardly directed flange. The latter flange can extend up to the shaft and thus seals the annular gap between the inner rotary tube and the shaft.

Nach einem weiteren Gedanken der Erfindung weist das Drehrohr außen angeordnete, axial gerichtete (und radial abstehende) Stege auf. Vorzugsweise sind etwa 4 bis 16 Stege am Umfang des Drehrohrs zur Mitnahme des Siebguts vorgesehen.According to a further aspect of the invention, the rotary tube has externally arranged, axially directed (and radially projecting) webs. Preferably, about 4 to 16 webs are provided on the circumference of the rotary tube for carrying the Siebguts.

Nach einem weiteren Gedanken der Erfindung sind am äußeren Drehrohrteil und am inneren Drehrohrteil axial gerichtete Stege vorgesehen, wobei insbesondere am inneren Drehrohrteil weniger Stege als am äußeren Drehrohrteil vorhanden sind. Die Anzahl der Stege weist insbesondere ein Verhältnis von 1 zu 2 auf. Beispielsweise sind am inneren Drehrohrteil 4 bis 8 Stege angeordnet und am äußeren Drehrohrteil 8 bis 16 Stege.According to a further aspect of the invention, axially directed webs are provided on the outer rotary tube part and on the inner rotary tube part, with fewer webs being present on the inner rotary tube part than on the outer rotary tube part, in particular. In particular, the number of webs has a ratio of 1 to 2. For example, 4 to 8 webs are arranged on the inner rotary tube part and 8 to 16 webs on the outer rotary tube part.

Nach einem weiteren Gedanken der Erfindung ist die Welle im Lagerrohr wenigstens zweifach gelagert, insbesondere an beiden Enden des Lagerrohres. Hierzu können auf die Welle aufgeschobene und mit Sprengringen und/oder Schrauben gesicherte (Kegel-) Rollenlager oder andere Lagermittel vorgesehen sein. Vorzugsweise ist die Welle innerhalb eines durch den Rahmen definierten Bereiches gelagert.According to a further aspect of the invention, the shaft is mounted at least twice in the bearing tube, in particular at both ends of the bearing tube. For this purpose, it is possible to provide (tapered) roller bearings or other bearing means which are pushed onto the shaft and secured with snap rings and / or screws. Preferably, the shaft is supported within an area defined by the frame.

Nach einem weiteren Gedanken der Erfindung ist das Lagerrohr in einer Aufnahmeplatte des Rahmens gehalten, wobei die Aufnahmeplatte insbesondere schräg gerichtet ist, mit einem unteren Bereich, welcher zum Drehrohr geneigt ist. Der untere Bereich der Aufnahmeplatte, die insbesondere Teil des Rahmens ist, weist somit einen spitzen Winkel zum Drehrohr auf, während ein oberer Bereich einen stumpfen Winkel zum Drehrohr bildet.According to a further aspect of the invention, the bearing tube is held in a receiving plate of the frame, wherein the receiving plate is directed in particular obliquely, with a lower portion which is inclined to the rotary tube. The lower portion of the receiving plate, which is in particular part of the frame, thus has an acute angle to the rotary tube, while an upper portion forms an obtuse angle to the rotary tube.

Nach einem weiteren Gedanken der Erfindung liegt das Lagerrohr mit einer oberen Lagerplatte außen an der Aufnahmeplatte und mit einer unteren Lagerplatte innen an der Aufnahmeplatte an. Die untere Lagerplatte ist dem Drehrohr zugewandt, während die obere Lagerplatte einem Wellenende außerhalb des durch den Rahmen definierten Bereiches zugewandt ist. Die beiden Lagerplatten sind vorzugsweise mit dreieckigen Stützblechen versehen, zum Abstützen am Außenumfang des Lagerrohrs. Lagerplatten, Stützbleche und Lagerrohr sind vorzugsweise fest miteinander verbunden, insbesondere verschweißt.According to a further aspect of the invention, the bearing tube with an upper bearing plate on the outside of the receiving plate and with a lower bearing plate inside of the receiving plate. The lower bearing plate faces the rotary tube while the upper bearing plate faces a shaft end outside the region defined by the frame. The two bearing plates are preferably provided with triangular support plates for supporting on the outer circumference of the bearing tube. Bearing plates, support plates and bearing tube are preferably fixedly connected to each other, in particular welded.

Nach einem weiteren Gedanken der Erfindung sind zwischen Aufnahmeplatte und Lagerplatte Zwischenplatten vorgesehen, insbesondere aus einem weicheren Werkstoff als die Lagerplatten und die Aufnahmeplatte. Vorzugsweise sind die Zwischenplatten größer als die Lagerplatten. Dadurch ergibt sich eine bessere Kraftverteilung auf die Aufnahmeplatte. Der weichere Werkstoff wirkt nachgiebig dämpfend auf auftretende Lastspitzen.According to a further aspect of the invention intermediate plates are provided between the receiving plate and the bearing plate, in particular of a softer material than the bearing plates and the receiving plate. Preferably, the intermediate plates are larger than the bearing plates. This results in a better distribution of force on the Receiving plate. The softer material has a yielding damping effect on occurring load peaks.

Nach einem weiteren Gedanken der Erfindung steht die Welle mit einem Wellenende aus dem Lagerrohr hervor, wobei auf diesem Wellenende ein Antriebskettenrad befestigt ist. Das Antriebskettenrad liegt somit außerhalb des Rahmens bzw. auf der dem Sieborgan abgewandten Seite der Aufnahmeplatte.According to a further idea of the invention, the shaft protrudes with a shaft end out of the bearing tube, a drive sprocket being fastened on this shaft end. The drive sprocket thus lies outside the frame or on the side facing away from the screen element of the receiving plate.

Nach einem weiteren Gedanken der Erfindung sind mehrere Sieborgane in einer gemeinsamen Siebebene angeordnet, wobei vorzugsweise seitlich zusätzliche Sieborgane oberhalb der Siebebene vorgesehen sind. Dadurch ergibt sich eine trichterförmige Anordnung der Sieborgane.According to a further aspect of the invention, several sieve organs are arranged in a common sieve plane, wherein laterally additional sieve elements are preferably provided above the sieve plane. This results in a funnel-shaped arrangement of the sieve organs.

Nach einem weiteren Gedanken der Erfindung sind die Sieborgane parallel zueinander oder in gespreizter Anordnung vorgesehen, mit zu einer Abgabeseite größerem Spalt. Der Abgabeseite gegenüberliegend, also im Bereich der Aufnahmeplatte, weisen die Sieborgane dann kleinere Abstände zueinander auf.According to a further aspect of the invention, the sieve members are provided parallel to each other or in a splayed arrangement, with a larger gap to a discharge side. The dispensing side opposite, ie in the region of the receiving plate, the sieve organs then have smaller distances to each other.

Nach einem weiteren Gedanken der Erfindung ist der Rahmen mit einer Schurre oder einem Schurrenblech versehen, welche einen Teil des Drehrohres überdeckt. Das Schurrenblech schützt Lager und Welle.According to a further idea of the invention, the frame is provided with a chute or a chute plate which covers a part of the rotary tube. The chute plate protects bearing and shaft.

Nach einem weiteren Gedanken der Erfindung ist das Sieborgan zylindrisch oder konisch ausgebildet. Auch kann eine äußere Umfangsfläche ballig ausgebildet sein.According to a further aspect of the invention, the screen member is cylindrical or conical. Also, an outer peripheral surface may be formed crowned.

Nach einem weiteren Gedanken der Erfindung ist das Sieborgan mit Ringen, Spiralen, Kratzern oder Mitnehmern bestückt. Alternativ kann das Sieborgan auch äußerlich glatt sein.According to a further aspect of the invention, the sieve member is equipped with rings, spirals, scratches or drivers. Alternatively, the strainer can also be outwardly smooth.

Nach einem weiteren Gedanken der Erfindung sind die Ringe, Spiralen, Kratzer oder Mitnehmer benachbarter Sieborgane auf Lücke zueinander angeordnet. Dadurch ergibt sich eine gleichmäßigere Oberfläche für das Siebgut.According to a further aspect of the invention, the rings, spirals, scratches or drivers adjacent sieve organs are arranged in a gap to each other. This results in a more uniform surface for the screenings.

Nach einem weiteren Gedanken der Erfindung ist der Rahmen in seiner Position verstellbar, derart, dass das Sieborgan bzw. eine Siebebene in der Neigung relativ zur Horizontalen verstellbar ist. Beispielsweise kann die Siebebene zur Abgabeseite hin geneigt eingestellt sein, so dass zu grobes Siebgut von der Siebebene herunter rutscht.According to a further idea of the invention, the frame is adjustable in its position, such that the sieve element or a sieve plane is adjustable in the inclination relative to the horizontal. For example, the screen level can be adjusted inclined to the discharge side, so that slipping too coarse screenings from the screen level.

Nach einem weiteren Gedanken der Erfindung sind mehrere Sieborgane vorgesehen, die gleichsinnig antreibbar sind. Möglich sind auch mehrere Sieborgane mit unterschiedlichen Drehrichtungen.According to a further aspect of the invention, a plurality of screening elements are provided, which can be driven in the same direction. Also possible are several Sieborgane with different directions of rotation.

Nach einem weiteren Gedanken der Erfindung ist das Sieborgan hydraulisch angetrieben, wobei vorzugsweise der hydraulische Druck überwacht wird, so dass bei Überschreiten eines Grenzwerts das Sieborgan stillgesetzt oder in Gegenrichtung angetrieben wird. Beispielsweise wird bei Überschreiten des Grenzwerts das Sieborgan nur für eine definierte Zeitspanne gegensinnig angetrieben und dreht anschließend wieder in der ursprünglichen Drehrichtung.According to a further aspect of the invention, the sieve member is hydraulically driven, wherein preferably the hydraulic pressure is monitored, so that when a limit value is exceeded, the sieve member is stopped or driven in the opposite direction. For example, when the limit value is exceeded, the screen element is driven in opposite directions only for a defined period of time and then rotates again in the original direction of rotation.

Gegenstand der Erfindung ist auch eine Siebmaschine mit wenigstens einem Sieb und einem Aufgabebunker und mit einer erfindungsgemäßen Siebvorrichtung, wie voranstehend erläutert, wobei die Siebvorrichtung insbesondere als Grobsieb über dem Aufgabebunker vorgesehen ist. Vorzugsweise weist die Siebmaschine ein Fahrwerk und ein Sieb mit rotierenden Sieborganen sowie mit einem Förderband für gesiebtes Siebgut (Feinkorn) auf.The subject matter of the invention is also a screening machine with at least one sieve and one feed bunker and with a sieve device according to the invention, as explained above, the sieve device being provided in particular as a coarse sieve above the feed bin. Preferably, the screening machine on a chassis and a screen with rotating Sieborganen and with a conveyor belt for screened screenings (fine grain).

Weitere Merkmale der Erfindung ergeben sich aus der Beschreibung im Übrigen und aus den Ansprüchen. Vorteilhafte Ausführungsformen werden nachfolgend anhand von Zeichnungen näher erläutert. Es zeigen:

Fig. 1
eine Siebmaschine mit Vorrichtung als Grobsieb in perspektivischer Darstellung,
Fig. 2
die Siebvorrichtung (Grobsieb) aus Figur 1 in einer stirnseitigen Ansicht von einer Abgabeseite her,
Fig. 3
die Siebvorrichtung gemäß Figur 2 in einer stirnseitigen Ansicht von einer Antriebsseite her,
Fig. 4
einen Längsschnitt durch die Siebvorrichtung der Figuren 2 und 3,
Fig. 5
eine abgewandelte Ausführungsform der Siebvorrichtung in perspektivischer Darstellung,
Fig. 6
eine stirnseitige Ansicht der Ausführungsform gem. Figur 5 von der Abgabeseite her,
Fig. 7
ein Sieborgan in perspektivischer Darstellung,
Fig. 8
das Sieborgan gemäß Figur 7 in einer anderen perspektivischen Darstellung, nämlich schräg von oben,
Fig. 9
das Sieborgan gemäß Figur 7 im Längsschnitt,
Fig. 10
ein äußeres Drehrohrteil des Sieborgans gemäß Figur 7 in perspektivischer Darstellung,
Fig. 11
eine weitere Ausführungsform des Sieborgans in perspektivischer Darstellung.
Further features of the invention will become apparent from the description, moreover, and from the claims. Advantageous embodiments will be explained in more detail with reference to drawings. Show it:
Fig. 1
a screening machine with device as Grobsieb in perspective view,
Fig. 2
the sieve device (coarse sieve) FIG. 1 in a frontal view from a delivery side,
Fig. 3
the screening device according to FIG. 2 in a front view from a drive side,
Fig. 4
a longitudinal section through the sieve of the Figures 2 and 3 .
Fig. 5
a modified embodiment of the screening device in a perspective view,
Fig. 6
an end view of the embodiment acc. FIG. 5 from the delivery side,
Fig. 7
a sieve organ in perspective view,
Fig. 8
the sieve organ according to FIG. 7 in another perspective view, namely obliquely from above,
Fig. 9
the sieve organ according to FIG. 7 in longitudinal section,
Fig. 10
an outer rotary tube part of the sieve member according to FIG. 7 in perspective,
Fig. 11
a further embodiment of the Sieborgans in a perspective view.

In Figur 1 dargestellt ist eine Siebmaschine 20 für das Sieben von Schutt, Erdreich, Böden und/oder Feldfrüchten. Bestandteile der Siebmaschine 20 sind hier ein Sternsieb 21 (oder Scheibensieb), ein Förderband 22 für Grobkorn, ein Förderband 23 für Feinkorn, ein Raupenfahrwerk 24, ein Antrieb 25, ein Traggestell 26 und ein Aufgabebunker 27. Oberhalb des Aufgabebunkers 27 ist eine Siebvorrichtung 28 als Grobsieb angeordnet. Die Siebvorrichtung 28 soll größere, feste Brocken aus dem zugeführten Schüttgut entfernen, bevor das Schüttgut in den Aufgabebunker 27 gelangt. Hierzu ist die Siebvorrichtung 28 mit mehreren langgestreckten, schräg abwärts gerichteten Sieborganen versehen und zudem an einer schräg abwärts liegenden Stirnseite 29 offen, so dass größere, feste Brocken, welche die Sieborgane nicht passieren können, über die Stirnseite 29 aus der Siebvorrichtung 28 schräg abwärts fallen können. Nur kleinere Brocken gelangen durch die Abstände zwischen den Sieborganen hindurch bis in den Aufgabebunker 27.In FIG. 1 shown is a screening machine 20 for the screening of debris, soil, soils and / or crops. Components of the screening machine 20 are here a star screen 21 (or disc screen), a conveyor belt 22 for coarse grain, a conveyor belt 23 for fine grain, a crawler chassis 24, a drive 25, a support frame 26 and a feed bunker 27. Above the task bunker 27 is a screening device 28th arranged as a coarse sieve. The screening device 28 is to remove larger, solid chunks from the bulk material supplied before the bulk material passes into the feed bin 27. For this purpose, the screening device 28 is provided with a plurality of elongated, obliquely downward sieve members and also open at an obliquely downward end face 29, so that larger, solid chunks, which can not pass through the sieve organs, fall obliquely downward over the end face 29 of the screening device 28 can. Only smaller chunks pass through the distances between the sieve organs and into the feed bunker 27.

Figur 2 zeigt die Siebvorrichtung 28 mit Blick in die als Abgabeseite vorgesehene Stirnseite 29 hinein. Erkennbar sind vier in einer gemeinsamen Siebebene angeordnete Drehrohe 30, 31, 32, 33 als Sieborgane. Diese sind im Wesentlichen zylindrisch ausgebildet, parallel zueinander ausgerichtet und weisen zueinander gleiche Abstände auf, nämlich Siebspalte 34. Ähnlich breite Siebspalte 35, 36 sind zwischen den äußeren Drehrohren 30, 33 und hierzu benachbarten, feststehenden Siebstangen 37, 38 vorgesehen. Letztere wirken hier als seitliche Begrenzungen. FIG. 2 shows the screening device 28 with a view into the provided as a discharge side end face 29 inside. Visible are four arranged in a common plane of the sieve rotary straws 30, 31, 32, 33 as Sieborgane. These are substantially cylindrical, aligned parallel to each other and have the same distances to each other, namely sieve gaps 34. Similarly wide sieve gaps 35, 36 are provided between the outer rotary tubes 30, 33 and stationary sieve bars 37, 38 adjacent thereto. The latter act as lateral boundaries.

Die Drehrohre 30 bis 33 und Siebstangen 37, 38 sind an einem Rahmen 39 gehalten. Bestandteile desselben sind unter anderem schräg gerichtete Seitenwände 40, 41, eine rückseitige, schräg gerichtete Aufnahmeplatte 42, eine Schurre 43, eine rückseitige (antriebsseitige) Querstrebe 44, seitliche Querstreben 45, 46, eine (abgabeseitige) Querstrebe 47 an der offenen Stirnseite 29 und seitliche Tragstützen 48, 49, ebenfalls im Bereich der offenen Stirnseite 29. Die Querstreben 44 bis 47 bilden ein in einer gemeinsamen Aufgabeebene liegendes Rechteck oberhalb der durch die Drehrohre 30 bis 33 gebildeten Siebebene.The rotary tubes 30 to 33 and sieve bars 37, 38 are held on a frame 39. Components thereof include obliquely directed side walls 40, 41, a rear, obliquely directed receiving plate 42, a chute 43, a rear (drive side) cross member 44, lateral cross braces 45, 46, a (discharge side) cross member 47 at the open end side 29 and lateral support posts 48, 49, also in the region of the open end face 29. The transverse struts 44 to 47 form a lying in a common task plane rectangle above the screen plane formed by the rotary tubes 30 to 33.

Die Drehrohre 30 bis 33 sind einseitig gelagert, nämlich in der Aufnahmeplatte 42. Hierzu ist ein feststehendes Lagerrohr 50 mit einer oberen Lagerplatte 51 und einer unteren Lagerplatte 52 versehen, welche schräg gerichtet und relativ zueinander versetzt angeordnet sind, siehe insbesondere Figuren 7 und 9. Das Lagerrohr 50 ist durch eine zugehörige Öffnung 53 in der Aufnahmeplatte 42 hindurchgesteckt, so dass die obere Lagerplatte 51 außenseitig (außerhalb des Rahmens) an der Aufnahmeplatte 42 anliegt, während die untere Lagerplatte 52 innenseitig an der Aufnahmeplatte 42 zu liegen kommt. Tatsächlich liegen die Lagerplatten 51, 52 nicht unmittelbar an der Aufnahmeplatte 42 an. Vielmehr ist jeweils noch eine Zwischenplatte 54, 55 vorgesehen, siehe Figur 4. Die Zwischenplatten 54, 55 haben im Wesentlichen zwei Funktionen. Zum einen sind diese aus etwas weicherem Werkstoff hergestellt als die Lagerplatten 51, 52, sind elastisch und können dadurch die auf das jeweilige Lagerrohr 50 wirkenden Kraftspitzen kurzzeitig dämpfen. Zum anderen sind die Zwischenplatten 54, 55 etwas großformatiger ausgebildet als die Lagerplatten 51, 52, sodass die Öffnung 53 weiter überdeckt ist. Zum besseren Aufnehmen der Kräfte sind die Lagerplatten 51, 52 jeweils mit einem dreieckigen Stützblech 56, 57 versehen. Wie insbesondere in Figur 4 ersichtlich, ragt das Lagerrohr 50 mit dem größten Teil seiner Länge in einen zwischen der Aufnahmeplatte 42 und der Stirnseite 29 gebildeten Siebraum 58 hinein, während ein kürzerer Teil seiner Länge über die Aufnahmeplatte 42 hinaus nach außen ragt.The rotary tubes 30 to 33 are mounted on one side, namely in the receiving plate 42. For this purpose, a fixed bearing tube 50 is provided with an upper bearing plate 51 and a lower bearing plate 52, which are obliquely directed and offset relative to each other, see in particular FIGS. 7 and 9 , The bearing tube 50 is inserted through an associated opening 53 in the receiving plate 42, so that the upper bearing plate 51 on the outside (outside the frame) rests against the receiving plate 42, while the lower bearing plate 52 comes to lie on the inside of the receiving plate 42. In fact, the bearing plates 51, 52 are not directly on the receiving plate 42 at. Rather, in each case an intermediate plate 54, 55 is provided, see FIG. 4 , The intermediate plates 54, 55 have essentially two functions. On the one hand, these are made of a somewhat softer material than the bearing plates 51, 52, are elastic and can thereby temporarily dampen the force peaks acting on the respective bearing tube 50. On the other hand, the intermediate plates 54, 55 are formed somewhat larger than the bearing plates 51, 52, so that the opening 53 is further covered. For better absorption of the forces, the bearing plates 51, 52 are each provided with a triangular support plate 56, 57. As in particular in FIG. 4 can be seen, the bearing tube 50 projects with most of its length in a formed between the receiving plate 42 and the end face screen space 58 into it, while a shorter part of its length projects beyond the receiving plate 42 outwardly.

Jedes Drehrohr 30 bis 33 ist am bzw. im zugehörigen Lagerrohr 50 gelagert. Hierzu ist im Lagerrohr 50 eine Welle 59 vorzugsweise in zwei Kegelrollenlagern 60, 61 gelagert. Antriebseitig, also außerhalb des Siebraums 58 ist die Welle 59 mit einem Antriebskettenrad 62 versehen, welches hier als Doppelkettenrad gezeichnet ist. Auf der anderen Seite tritt die Welle 59 aus dem Lagerrohr 50 mit einem endseitigen Wellenabschnitt bzw. einem Wellenende 63 heraus und ist dort mit dem jeweiligen Drehrohr 30 bis 33 verbunden.Each rotary tube 30 to 33 is mounted on or in the associated bearing tube 50. For this purpose, in the bearing tube 50, a shaft 59 is preferably mounted in two tapered roller bearings 60, 61. On the drive side, that is outside of the screen space 58, the shaft 59 is provided with a drive sprocket 62, which is shown here as a double sprocket. On the other hand, the shaft 59 comes out of the bearing tube 50 with an end shaft portion or a shaft end 63 and is there connected to the respective rotary tube 30 to 33.

Jedes Drehrohr 30 bis 33 ist hier in axialer Richtung mehrteilig ausgebildet, nämlich mit einem in axialer Richtung äußeren Drehrohrteil 64 und einem inneren Drehrohrteil 65. Das äußere Drehrohrteil 64 ist mit Hilfe von zwei radial gerichteten Stiften 66, 67 mit dem Wellenende 63 verbunden. Der Stift 66 ist fest in das Wellenende 63 eingesetzt und kommt in eine Nut 68 des äußeren Drehrohrteils 64 zu liegen. Der Stift 67 ist fest in das äußere Drehrohrteil 64 eingesetzt und kommt in einer endseitigen Nut 69 des Wellenendes 63 zu liegen. Hierzu ist der Stift 67 in eine Bohrung 70 des äußeren Drehrohrteils 64 eingesetzt.Each rotary tube 30 to 33 is here formed in several parts in the axial direction, namely with an axially outer rotary tube part 64 and an inner rotary tube part 65. The outer rotary tube part 64 is connected by means of two radially directed pins 66, 67 with the shaft end 63. The pin 66 is firmly inserted into the shaft end 63 and comes to lie in a groove 68 of the outer rotary tubular member 64. The pin 67 is firmly inserted into the outer rotary tube part 64 and comes to lie in an end-side groove 69 of the shaft end 63. For this purpose, the pin 67 is inserted into a bore 70 of the outer rotary tube part 64.

Das innere Drehrohrteil 65 ist in Axialrichtung mit dem äußeren Drehrohrteil über Rohrflansche verschraubt. Hierzu weist das äußere Drehrohrteil einen radial auswärts gerichteten Flansch 71 mit Bohrungen 72 auf. Analog dazu ist das innere Drehrohrteil 65 mit einem radial einwärts gerichteten Flansch 73 versehen, ebenfalls mit Bohrungen 74. Die Bohrungen 74 sind hier mit Innengewinden versehen und fluchten mit den Bohrungen 72, so dass die Drehrohrteile 64, 65 umlaufend durch Schrauben miteinander verbindbar sind.The inner rotary tube part 65 is screwed in the axial direction with the outer rotary tube part via pipe flanges. For this purpose, the outer rotary tube part has a radially outwardly directed flange 71 with bores 72. Similarly, the inner rotary tubular member 65 is provided with a radially inwardly directed flange 73, also with holes 74. The holes 74 are here provided with internal threads and aligned with the holes 72, so that the rotary tubular members 64, 65 are connected to each other by screws.

Das innere Drehrohrteil 65 umfasst ausschließlich einen Abschnitt des Lagerrohrs 50 und erstreckt sich bis fast an die untere Lagerplatte 52 heran. Um das Eindringen von Schmutz in den Zwischenraum zwischen dem inneren Drehrohrteil 65 und dem Lagerrohr 50 zu vermeiden, erstreckt sich die Schurre 43 bis über das innere Drehrohrteil 65. Auch kann ein zusätzlicher Lagerring oder Simmerring vorgesehen sein.The inner rotary tube part 65 comprises only a portion of the bearing tube 50 and extends almost to the lower bearing plate 52 zoom. In order to prevent the ingress of dirt into the intermediate space between the inner rotary tube part 65 and the bearing tube 50, the chute 43 extends beyond the inner rotary tube part 65. Also, an additional bearing ring or Simmerring be provided.

Das äußere Drehrohrteil 64 weist an seiner Außenseite axial verlaufende und radial gerichtete Stege 75 auf, vorzugsweise etwa 12 Stück und mit gleichen Abständen zueinander. Davon abweichend ist das innere Drehrohrteil 65 vorzugsweise mit etwas weniger Stegen 76 versehen, vorzugweise mit etwa 6 Stück und mit gleichen Abständen zueinander, siehe insbesondere Figur 2. Dabei weist das innere Drehrohrteil einen etwas größeren Außendurchmesser als das innere Drehrohrteil 65 auf, so dass die Stege 76 radial weiter außen angeordnet sind als die Stege 75.The outer rotary tube part 64 has on its outer side axially extending and radially directed webs 75, preferably about 12 pieces and at equal distances from each other. Deviating from the inner rotary tubular member 65 is preferably provided with a little fewer webs 76, preferably with about 6 pieces and at equal distances from each other, see in particular FIG. 2 , In this case, the inner rotary tube part has a slightly larger outer diameter than the inner rotary tube part 65, so that the webs 76 are arranged radially further outward than the webs 75.

Zusätzlich zu den Stegen 75, 76 und/oder anstelle derselben können die Drehrohrteile 64, 65 mit Ringen 77 oder Spiralen 78 versehen sein, siehe Figur 11. Dort ist das äußere Drehrohrteil 64 zusätzlich zu den Stegen 65 mit Ringen 67 versehen, während das innere Drehrohrteil 65 keine Stege aufweist und stattdessen mit einer Spirale 68 versehen ist.In addition to the webs 75, 76 and / or instead of the same, the rotary tube parts 64, 65 may be provided with rings 77 or spirals 78, see FIG. 11 , There, the outer rotary tube part 64 is provided in addition to the webs 65 with rings 67, while the inner rotary tube part 65 has no webs and is instead provided with a spiral 68.

Eine abgewandelte Ausführungsform der Siebvorrichtung 28 zeigen die Figuren 5 und 6. Zusätzlich zu den Drehrohren 30 bis 33 sind zwei weitere Drehrohre 79, 80 vorgesehen, nämlich oberhalb der durch die Drehrohre 30 bis 33 gebildeten Siebebene und schräg oberhalb der jeweils äußeren Drehrohre 30, 33. Die Drehrohre 79, 80 bilden mit den Drehrohren 30, 33 eine trichterförmige Formation.A modified embodiment of the screening device 28 show the Figures 5 and 6 , In addition to the rotary tubes 30 to 33, two further rotary tubes 79, 80 are provided, namely above the sieve plane formed by the rotary tubes 30 to 33 and obliquely above the respective outer rotary tubes 30, 33. The rotary tubes 79, 80 form with the rotary tubes 30, 33 a funnel-shaped formation.

Vorzugsweise sind die Drehrohre 30 bis 33 gleichsinnig angetrieben. Der Antrieb erfolgt hier hydraulisch. Durch Messung des hydraulischen Drucks kann der Antrieb überwacht werden. Bei Überschreiten eines Grenzwerts wird die Drehrichtung umgekehrt.Preferably, the rotary tubes 30 to 33 are driven in the same direction. The drive is hydraulic here. By measuring the hydraulic pressure, the drive can be monitored. If a limit is exceeded, the direction of rotation is reversed.

Die Drehrichtungen der Drehrohre 79, 80 sind an die Drehrichtungen der Drehrohre 30 bis 33 angepasst oder davon abweichend vorgesehen. Analog gilt dies für die Antriebssteuerung und einen möglichen Überlastschutz.The directions of rotation of the rotary tubes 79, 80 are adapted to the directions of rotation of the rotary tubes 30 to 33 or deviating provided. This also applies to drive control and possible overload protection.

Die Siebvorrichtung 28 ist gemäß Figur 1 schwenkbar ausgebildet, so dass die Abwärtsneigung der Drehrohre 30 bis 33 veränderbar ist. Hierzu sind die Tragstützen 48, 49 am Traggestell 26 schwenkbar gelagert, während die rückseitige Querstrebe 44 seitlich über Hydraulikzylinder 81 anhebbar oder absenkbar ist.

Figure imgb0001
Figure imgb0002
 The screening device 28 is according to FIG. 1 formed pivotable, so that the downward inclination of the rotary tubes 30 to 33 is variable. For this purpose, the support posts 48, 49 are pivotally mounted on the support frame 26, while the rear cross member 44 is laterally raised or lowered via hydraulic cylinders 81.
Figure imgb0001
Figure imgb0002

Claims (15)

Siebvorrichtung (28) mit mindestens einem an einem Rahmen (39) einseitig gelagerten, rotierenden, langgestreckten Sieborgan, dadurch gekennzeichnet, dass das Sieborgan Welle (59), Lagerrohr (50) und Drehrohr (30, 31, 32, 33, 79, 80) aufweist, wobei das Lagerrohr (50) am Rahmen feststehend gehalten, die Welle (59) im Lagerrohr (50) gelagert und das Drehrohr (30, ...) mit der Welle (59) verbunden ist.Screening device (28) with at least one on one frame (39) mounted on one side, rotating, elongate Sieborgan, characterized in that the Sieborgan shaft (59), bearing tube (50) and rotary tube (30, 31, 32, 33, 79, 80 ), wherein the bearing tube (50) held stationary on the frame, the shaft (59) mounted in the bearing tube (50) and the rotary tube (30, ...) with the shaft (59) is connected. Siebvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Drehrohr (30, ...) das Lagerrohr (50) zumindest teilweise überdeckt.Screening device according to claim 1, characterized in that the rotary tube (30, ...) at least partially covers the bearing tube (50). Siebvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Drehrohr (30, ...) mehrteilig ausgebildet ist, zumindest mit einem axial äußeren Drehrohrteil (64) und einem axial inneren Drehrohrteil (65), wobei die Welle (59) vorzugsweise mit dem äußeren Drehrohrteil (64) verbunden ist und das innere Drehrohrteil (65) das Lagerrohr (50) zumindest teilweise überdeckt.Screening device according to claim 1 or 2, characterized in that the rotary tube (30, ...) is formed in several parts, at least with an axially outer rotary tubular member (64) and an axially inner rotary tubular member (65), wherein the shaft (59) preferably with the outer rotary tube part (64) is connected and the inner rotary tube part (65) at least partially covers the bearing tube (50). Siebvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Welle (59) mit einem endseitigen Wellenabschnitt (63) in das äußere Drehrohrteil (64) hineinragt, und dass der Wellenabschnitt (63) durch wenigstens einen Stift (66, 67) oder Bolzen mit dem äußeren Drehrohrteil (64) verbunden ist.A screening device according to claim 3, characterized in that the shaft (59) projects into the outer rotary tube part (64) with an end shaft portion (63), and that the shaft portion (63) is connected by at least one pin (66, 67) or bolt to the outer rotary tube part (64) is connected. Siebvorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Drehrohrteile (64, 65) über Rohrflansche (71, 73) miteinander verschraubt sind, insbesondere mit einem radial auswärtsgerichteten Flansch (71) am äußeren Drehrohrteil (64).Screening device according to claim 3 or 4, characterized in that the rotary tube parts (64, 65) are screwed together via pipe flanges (71, 73), in particular with a radially outwardly directed flange (71) on the outer rotary tube part (64). Siebvorrichtung nach Anspruch 1 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass das Drehrohr (30-33, 79, 80) außen angeordnete, axialgerichtete Stege (75, 76) aufweist.Screening device according to claim 1 or one of the further claims, characterized in that the rotary tube (30-33, 79, 80) has externally arranged, axially directed webs (75, 76). Siebvorrichtung nach Anspruch 3 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass am äußeren Drehrohrteil (64) und am inneren Drehrohrteil (65) axialgerichtete Stege (75, 76) vorgesehen sind, und dass insbesondere am inneren Drehrohrteil (65) weniger Stege (76) als am äußeren Drehrohrteil (64) vorgesehen sind.Sieve device according to claim 3 or one of the further claims, characterized in that axially directed webs (75, 76) are provided on the outer rotary tube part (64) and on the inner rotary tube part (65), and in particular on the inner rotary tube part (65) fewer webs (76 ) are provided as on the outer rotary tube part (64). Siebvorrichtung nach Anspruch 1 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass die Welle (59) im Lagerrohr (50) wenigstens zweifach gelagert ist, insbesondere an beiden Enden des Lagerrohrs (50).Screening device according to claim 1 or one of the further claims, characterized in that the shaft (59) in the bearing tube (50) is mounted at least twice, in particular at both ends of the bearing tube (50). Siebvorrichtung nach Anspruch 1 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass das Lagerrohr (50) in einer Aufnahmeplatte (42) des Rahmens (39) gehalten ist, und dass die Aufnahmeplatte (42) insbesondere schräggerichtet ist, mit einem unteren Bereich, welcher zum Drehrohr (30, ...) geneigt bzw. gerichtet ist.Screening device according to claim 1 or one of the further claims, characterized in that the bearing tube (50) in a receiving plate (42) of the frame (39) is held, and that the receiving plate (42) is in particular obliquely directed, with a lower portion, which to the rotary tube (30, ...) is inclined or directed. Siebvorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass das Lagerrohr (50) mit einer oberen Lagerplatte (51) außen an der Aufnahmeplatte (42) und mit einer unteren Lagerplatte (52) innen an der Aufnahmeplatte (42) anliegt.Screening device according to claim 9, characterized in that the bearing tube (50) with an upper bearing plate (51) on the outside of the receiving plate (42) and with a lower bearing plate (52) inside the receiving plate (42). Siebvorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass zwischen Aufnahmeplatte (42) und Lagerplatten (51, 52) Zwischenplatten (54, 55), vorgesehen sind, insbesondere aus einem weicheren Werkstoff als die Lagerplatten (51, 52) und die Aufnahmeplatte (42).Screening device according to claim 10, characterized in that between the receiving plate (42) and bearing plates (51, 52) intermediate plates (54, 55) are provided, in particular of a softer material than the bearing plates (51, 52) and the receiving plate (42). , Siebvorrichtung nach Anspruch 1 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass die Welle (59) mit einem Wellenende aus dem Lagerrohr (50) hervorsteht, und dass auf diesem Wellenende ein Antriebskettenrad (62) befestigt ist.Screening device according to claim 1 or one of the further claims, characterized in that the shaft (59) protrudes with a shaft end of the bearing tube (50), and that on this shaft end a drive sprocket (62) is attached. Siebvorrichtung nach Anspruch 1 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass mehrere Sieborgane in einer gemeinsamen Siebebene angeordnet sind, und dass vorzugsweise seitlich zusätzliche Sieborgane oberhalb der Siebebene angeordnet sind.Sieving device according to claim 1 or one of the further claims, characterized in that a plurality of sieve members are arranged in a common sieve plane, and that preferably laterally additional sieve members are arranged above the sieve plane. Siebvorrichtung nach Anspruch 1 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass die Sieborgane parallel zueinander oder in gespreizter Anordnung vorgesehen sind, mit zu einer Abgabeseite größerem Siebspalt (34).Screening device according to Claim 1 or one of the further claims, characterized in that the screening elements are provided parallel to one another or in a spread arrangement, with a sieve gap (34) which is larger towards a delivery side. Siebmaschine (20) mit wenigstens einem Sieb (21) und einem Aufgabebunker (27), gekennzeichnet durch eine Siebvorrichtung (28) nach einem der voranstehenden Ansprüche, insbesondere als Grobsieb über dem Aufgabebunker (27).Sieving machine (20) with at least one sieve (21) and one feed bunker (27), characterized by a sieve device (28) according to one of the preceding claims, in particular as coarse sieve above the feed bin (27).
EP17000393.3A 2016-04-04 2017-03-10 Screening device Active EP3228393B1 (en)

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WO2019121049A3 (en) * 2017-12-20 2019-08-15 Doppstadt Familienholding Gmbh Device for separating material to be fed
CN113262975A (en) * 2021-05-31 2021-08-17 重庆工程职业技术学院 Screening plant for construction

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DE102022004864B3 (en) 2022-12-22 2023-09-07 Usg Umweltservice Gmbh & Co. Kg Device for separating feed material

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EP1570919A1 (en) 2004-03-02 2005-09-07 Anlagenbau Günther GmbH Apparatus for separating of substantially solid products

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US4430210A (en) * 1979-07-13 1984-02-07 Rauma-Repola Oy Screen
US5287977A (en) * 1992-12-18 1994-02-22 Tirschler Ehrenfried A Roller system for use in a roller screen
EP1570919A1 (en) 2004-03-02 2005-09-07 Anlagenbau Günther GmbH Apparatus for separating of substantially solid products

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019121049A3 (en) * 2017-12-20 2019-08-15 Doppstadt Familienholding Gmbh Device for separating material to be fed
CN111479637A (en) * 2017-12-20 2020-07-31 Lig有限责任公司 Apparatus for separating feed material
CN113262975A (en) * 2021-05-31 2021-08-17 重庆工程职业技术学院 Screening plant for construction

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