EP2631371B1 - Sieblöffel - Google Patents

Sieblöffel Download PDF

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Publication number
EP2631371B1
EP2631371B1 EP13156644.0A EP13156644A EP2631371B1 EP 2631371 B1 EP2631371 B1 EP 2631371B1 EP 13156644 A EP13156644 A EP 13156644A EP 2631371 B1 EP2631371 B1 EP 2631371B1
Authority
EP
European Patent Office
Prior art keywords
plate
shaft
screening bucket
screening
drums
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP13156644.0A
Other languages
English (en)
French (fr)
Other versions
EP2631371A1 (de
Inventor
Davide Cangini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cangini Benne SRL
Original Assignee
Cangini Benne SRL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cangini Benne SRL filed Critical Cangini Benne SRL
Publication of EP2631371A1 publication Critical patent/EP2631371A1/de
Application granted granted Critical
Publication of EP2631371B1 publication Critical patent/EP2631371B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36Component parts
    • E02F3/40Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/407Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with ejecting or other unloading device
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F7/00Equipment for conveying or separating excavated material
    • E02F7/06Delivery chutes or screening plants or mixing plants mounted on dredgers or excavators

Definitions

  • the present invention relates to a screening bucket of the type adapted to be applied to machines for handling loose material, in particular earth, such as excavators or loading machines, for selecting, crushing and separating scrap material resulting from demolitions, excavations or reclamation of rocky soil, for example.
  • the screening buckets of the above-mentioned type have a front opening for loading the material and a rear opening facing the front opening and closed by a screening group consisting of a plurality of blade drums, which are arranged adjacent and parallel to one another and are supported, at the respective axial ends and with the interposition of bearings, by two fixed plates, usually the lateral walls of the bucket, in order to rotate, in use, about the respective longitudinal axes and allow the selected material to escape through the spaces between one drum and the other.
  • the drums are usually actuated by a hydraulic motor and a mechanical transmission, which comprises a first toothed pulley keyed onto the output shaft of the motor and a plurality of second toothed pulleys keyed onto respective ends of the drums outside said fixed plates and coupled to the first toothed pulley by means of chains.
  • a hydraulic motor and a mechanical transmission which comprises a first toothed pulley keyed onto the output shaft of the motor and a plurality of second toothed pulleys keyed onto respective ends of the drums outside said fixed plates and coupled to the first toothed pulley by means of chains.
  • the latter is usually insulated from the outside by a sturdy protective shell releasably mounted to the exterior of said fixed plates.
  • a screening bucket of this type is described in EP2204501 , for example.
  • the above-described screening buckets usually suffer from a drawback resulting from the fact that whenever the screening buckets need to be removed for being replaced with new, unworn drums or with different drums, the operations of removing and replacing the drums are relatively complex and require a fair accuracy of execution by the operator, as they also need the removal and replacement of the whole transmission.
  • Such a drawback is particularly burdensome if we consider that, very often, the replacement of the screening group is carried out on site, where the operating conditions are usually difficult due to the presence of mud and dust, and certainly not adapted to work on components such as those of the transmission.
  • reference numeral 1 indicates as a whole a screening bucket adapted to be applied to an operating machine (not shown) for handling loose material, in particular earth, such as excavators or loading machines, for selecting, crushing and separating scrap material resulting from demolitions, excavations or reclamation of rocky soil, for example.
  • Bucket 1 comprises a trapezoidal hollow body 2 delimited by a flat lower wall 3 having a toothed edge 4, by two lateral walls 5 transversal to the lower wall 3, and by an upper wall 6 facing the lower wall 3, which carries hooks 7 for connecting bucket 1 to the operating machine (not shown), and together with lower wall 3 and lateral walls 5, delimits a front opening 8, delimited at the bottom by the toothed edge 4, for loading the material and a rear opening 9 having a generally rectangular shape and facing the front opening 8.
  • Bucket 1 further comprises a screening group 10, which is arranged at the bottom of the hollow body 2, closes the rear opening 9 and is actuated, in use, once bucket 1 has been loaded, lifted off the ground and arranged with the front opening 8 upwards, for separating and possibly crushing the material loaded and letting the selected material fall outside.
  • a screening group 10 which is arranged at the bottom of the hollow body 2, closes the rear opening 9 and is actuated, in use, once bucket 1 has been loaded, lifted off the ground and arranged with the front opening 8 upwards, for separating and possibly crushing the material loaded and letting the selected material fall outside.
  • the screening group 10 comprises a support frame 11, which is firmly connected to the hollow body 2, is shaped as a rectangular frame which surrounds the rear opening 9, and comprises an upper plate 12 and a lower plate 13 parallel to each other and arranged at respective long sides of the rear opening 9, and two lateral plates 14 and 15, which are arranged at respective short sides of the rear opening 9, are parallel to each other and transversal to the lower 12 and upper 13 walls and are substantially coplanar to the respective lateral walls 5 of the hollow body 2.
  • the upper 12, lower 13 and lateral 14 plates are flat plates having a generally rectangular shape, while the lateral plate 15 has a rectangular recess 16 along a rear edge thereof opposite to the edge connected to the lateral wall 5, which recess imparts a C shape to the lateral plate 15 and is usually closed by a counter-plate 17 removably connected to the outer surface of the lateral plate 15.
  • the screening group 10 further comprises a plurality of blade drums 18, which extend adjacent to one another through the rear opening 9 and are supported by frame 11 to rotate about respective longitudinal axes 19 parallel to one another and perpendicular to the lateral plates 14 and 15.
  • Drums 18 are screening drums of the known type, and each of them generally comprises a shaft 20 and a plurality of suitably shaped disc blades 21, which are keyed onto shaft 20, are evenly distributed along the longitudinal axis 19 and are adapted to cooperate, in use, with the blades 21 of the other drums 18 and with two combs 22 fixed to the inner sides of the upper 12 and lower 13 plates for crushing and selecting the material within bucket 1.
  • the example described relates to a screening group 10 having only two drums 18 rotatable about respective longitudinal axes 19 coplanar to each other; obviously, the number of drums 18 may be greater than two and the respective longitudinal axes 19 may be offset to each other.
  • the screening group 10 finally comprises a unit 23 for actuating drums 18, comprising a hydraulic actuator 24 which is mounted outside the upper plate 12 close to the lateral plate 14, is provided with couplings for the connection to the oil hydraulic circuit of the operating machine (not shown), and has an output shaft 25 which extends, with the interposition of a bearing 26, through the lateral plate 14 to rotate about a respective axis 27 perpendicular to the lateral plate 14 itself and parallel to the longitudinal axes 19.
  • the actuating unit 23 further comprises a mechanical transmission 28 serving the function of transferring the rotational motion from the output shaft 25 to the shafts 20 of drums 18.
  • transmission 28 is mounted to the outer surface of the lateral plate 14, is enclosed into a protective shell 29 fixed to the lateral plate 14, and comprises a toothed pulley 30 keyed onto the free end of the output shaft 25 and a plurality of toothed pulleys 31 angularly coupled to one another and to the toothed pulley 30 by means of chains.
  • pulleys 31 which are grouped in two pairs, each of which is associated with a respective drum 18 and is keyed onto a shaft 32, which is coaxial to the longitudinal axis 19 of the related drum 18 and is rotatably mounted through the lateral plate 14 by the interposition of a respective bearing 33 fixed to the lateral plate 14 by means of a fixing plate 34.
  • the transmission of the rotational motion from output shaft 25 to shafts 32 is carried out by means of a first chain 35, which is wound about pulley 30 and about a pulley 31 of a first pair of pulleys 31, and by means of a second chain 36 which is wound about the other pulley 31 of the first pair and about a pulley 31 of the second pair.
  • the other pulley 31 of the second pair remains unused and could theoretically be missing.
  • shafts 32 are thus interchangeable, whatever their number inside the transmission 28, with obvious advantages in terms of reduction in design costs and assembly time of transmission 18.
  • Each shaft 32 has a free end, which protrudes beyond the lateral plate 14 and is angularly coupled to an axial end of the shaft 20 of a respective drum 18 by means of a releasable axial plug-in fast joint 37.
  • each joint 37 is of the radial teeth type and comprises a grooved shaft 38, which is directly obtained on the free end of the respective shaft 32, or is integrally connected thereto, and engages a grooved hole 39 obtained on the axial end of shaft 20 in a position coaxial to the longitudinal axis 19.
  • drums 18 are rotatably supported by counter-plate 17 through respective bearings 40, each of which is carried by counter-plate 17, is coaxial to a respective longitudinal axis 19, and is releasably engaged by a tang 41 defining the free end of a respective shaft 20.
  • counter-plate 17 accommodates bearings 40 at a central bulging portion 17a thereof, which extends through recess 16 towards drums 18 and has a thickness approximately equal to the length of each grooved shaft 38, so as to axially lock the drums 18 between counter-plate 7 and lateral plate 14.
  • each drum 18 free from tang 41 and of the length of the respective grooved shaft 38 is lower than the distance between the lateral walls 14 and 15, and the distance between tangs 41 is lower than the height of recess 16.
  • drums 18 In use, when drums 18 need to be replaced, it is sufficient to detach the counter-plate 17, and bearings 40 therewith, from the lateral plate 15 and axially extract the drums 18 up to causing the release of the respective joints 37, and at that point transversally remove drums 18.
  • the assembly operation is carried out by performing the same operations in the reverse order, i.e. by arranging the drums 18 into frame 11 in axial alignment with the grooved shafts 38 ( figure 4 ), by axially moving drums 18 towards the lateral plate 14 so as to cause the fitting of joints 37, inserting the portion 17a of counter-plate 17 through recess 16 so as to introduce the tangs 41 into the respective bearings 40, and finally locking the counter-plate 17 on the lateral plate 15.
  • each joint 37 may consist of a shaft with key or of a free shaft provided with a removable pin.
  • each grooved shaft 38 is integral with and coaxial to the respective shaft 20, and each grooved hole 39 is axially obtained on the respective shaft 32.
  • the upper 12, lower 13 and lateral 14 and 15 plates may be integrally obtained with the hollow body 2 as extensions of the lower wall 3 and of the upper wall 6 and the lateral walls 5, respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Shovels (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Storage Of Fruits Or Vegetables (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Crushing And Pulverization Processes (AREA)

Claims (8)

  1. Siebschaufel, umfassend eine vordere Ladeöffnung (8) und eine hintere Öffnung (9), die der vorderen Öffnung (8) zugewandt ist, und aufweisend eine Siebgruppe (10), die durch die hintere Öffnung (9) angeordnet ist und die einen Halterahmen (11) und eine Vielzahl von Siebtrommeln (18), die auf dem Rahmen (11) befestigt sind, so dass sie um entsprechende parallel zueinander angeordnetete Längsachsen (19) rotieren, aufweist; die Schaufel (1) umfasst ferner Aktuatormittel (23), die eingerichtet sind um die Trommeln (18) um die entsprechenden Längsachsen (19) zu rotieren und die ein mechanisches Getriebe (28) aufweisen; der Rahmen (11) umfasst quer zu den Längsachsen (19) eine erste Platte (14) und eine zweite Platte (15), die an gegenüberliegenden Seiten der hinteren Öffnung (9) angeordnet sind; und das mechanische Getriebe (28) ist an der ersten Platte (14) befestigt und umfasst für jede Trommel (18) einen entsprechenden Abtrieb (38), der durch die erste Platte (14) befestigt ist; die Siebschaufel (1) ist dadurch gekennzeichnet, dass jede der Abtriebe (38) drehfest verbunden ist mit einem Ende der entsprechenden Trommel (18) in einer lösbaren Weise anhand einer axialen Einsteck-Schnellverbindung (37).
  2. Die Siebschaufel wie beansprucht in Anspruch 1, umfassend eine Gegenplatte (17), die parallel zur ersten Platte (14) ist, und die im Hinblick auf die erste Platte (14) gegenüber der hinteren Öffnung (9) angeordnet ist, und die lösbar verbunden ist mit dem Rahmen (11), und die diejenigen Enden der Trommeln (18) stützt, die gegenüber zu denjenigen sind, die in einer drehbaren und lösbaren Weise verbunden sind mit den Abtrieben (38).
  3. Die Siebschaufel wie beansprucht in Anspruch 2, wobei die zweite Platte (15) eine Durchgangsöffnung (16) umfasst, die der ersten Platte (14) zugewandt ist; die Gegenplatte (17) ist lösbar verbunden mit der zweiten Platte (15) um die Durchgangsöffnung (16) zu schließen und die Trommeln (18) axial zwischen der ersten Platte (14) und der Gegenplatte (17) selbst zu verriegeln.
  4. Die Siebschaufel wie beansprucht in einem der vorhergeheneden Ansprüche, wobei die Verbindung (37) eine gezahnte Verbindung ist.
  5. Die Siebschaufel wie beansprucht in einem der vorhergeheneden Ansprüche, wobei die Verbindung (37) eine außen gekerbete Welle (38) aufweist, die koaxial zur entsprechenden Trommel (18) ist und die einen entsprechenden Abtrieb (38) definiert.
  6. Die Siebschaufel wie beansprucht in Anspruch 5, wobei die erste Platte (14) und die zweite Platte (15) in einem gewissen Abstand zueinander gehalten sind, der zumindest der Summe der Länge der außen gekerbten Welle (38) und der Länge der entsprechenden Trommel (18) entspricht.
  7. Die Siebschaufel wie beansprucht in den Ansprüchen 3 und 6, wobei die Gegenplatte (17) mit einem zentralen wulstigen Abschnitt (17a) versehen ist, der für jede Trommel (18) ein Drehlager (40) trägt; der zentrale wulstige Abschnitt (17a) erstreckt sich durch die Durchgangsöffnung (16) und umfasst eine Dicke in etwa gleich zur Länge von jeder außen gekerbten Welle (38).
  8. Die Siebschaufel wie beansprucht in einem der vorhergeheneden Ansprüche, wobei das mechanische Getriebe (28) befestigt ist an einer äußeren Oberfläche der ersten Platte (14) und umfasst eine erste Eingangswelle (25) und für jede Trommel (18) eine zweite Welle (32), die drehbar befestigt sind durch die erste Platte (14), und Kettenübertragungsmittel (35, 36), die der ersten Welle (25) und der zweiten Welle (32) zwischengeschaltet sind.
EP13156644.0A 2012-02-24 2013-02-25 Sieblöffel Not-in-force EP2631371B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000162A ITTO20120162A1 (it) 2012-02-24 2012-02-24 Benna vagliatrice

Publications (2)

Publication Number Publication Date
EP2631371A1 EP2631371A1 (de) 2013-08-28
EP2631371B1 true EP2631371B1 (de) 2014-03-26

Family

ID=46001484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13156644.0A Not-in-force EP2631371B1 (de) 2012-02-24 2013-02-25 Sieblöffel

Country Status (2)

Country Link
EP (1) EP2631371B1 (de)
IT (1) ITTO20120162A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017107352A1 (de) 2017-04-05 2018-10-11 Mts Maschinentechnik Schrode Ag Bodenrecycler mit einem Schaufelgehäuse
CN110799707A (zh) * 2017-07-11 2020-02-14 布雷甘泽机械股份公司简称Mb股份公司 筛分斗
DE102022126952B3 (de) 2022-10-14 2024-04-18 Mts Schrode Ag Bodenrecycler mit einem Schaufelgehäuse

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202000031091A1 (it) 2020-12-16 2022-06-16 Simex Eng S R L Benna vagliatrice

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10064149A1 (de) * 2000-12-22 2002-07-04 Swaning Techniek Coevorden B V Vorrichtung zum Zerkleinern von festem Material
FI113846B (fi) * 2003-04-09 2004-06-30 Yhteisviejaet Tamex Oy Menetelmä maa-aineksen seulomiseksi ja seulaväline
FI6690U1 (fi) * 2005-04-06 2005-05-26 Ideachip Oy Seulova, murskaava tai sekoittava kauha
US7445122B2 (en) * 2006-11-22 2008-11-04 Albert Ben Currey Mechanical bucket
FI120799B (fi) * 2008-12-30 2010-03-15 Allu Finland Oy Seulova, murskaava tai sekoittava kauha
FI121754B (fi) * 2009-07-14 2011-03-31 Allu Finland Oy Seulova, murskaava tai sekoittava kauha

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017107352A1 (de) 2017-04-05 2018-10-11 Mts Maschinentechnik Schrode Ag Bodenrecycler mit einem Schaufelgehäuse
CN110799707A (zh) * 2017-07-11 2020-02-14 布雷甘泽机械股份公司简称Mb股份公司 筛分斗
CN110799707B (zh) * 2017-07-11 2022-02-25 布雷甘泽机械股份公司简称Mb股份公司 筛分斗、保持设备以及包括该筛分斗和该保持设备的套件
DE102022126952B3 (de) 2022-10-14 2024-04-18 Mts Schrode Ag Bodenrecycler mit einem Schaufelgehäuse

Also Published As

Publication number Publication date
ITTO20120162A1 (it) 2013-08-25
EP2631371A1 (de) 2013-08-28

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