NL2005654C2 - An excavator and a method for unloading bulk goods. - Google Patents

An excavator and a method for unloading bulk goods. Download PDF

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Publication number
NL2005654C2
NL2005654C2 NL2005654A NL2005654A NL2005654C2 NL 2005654 C2 NL2005654 C2 NL 2005654C2 NL 2005654 A NL2005654 A NL 2005654A NL 2005654 A NL2005654 A NL 2005654A NL 2005654 C2 NL2005654 C2 NL 2005654C2
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NL
Netherlands
Prior art keywords
conveyor
excavator
ship
hold
conveyor belt
Prior art date
Application number
NL2005654A
Other languages
Dutch (nl)
Inventor
Johannes Everardus Antonius Maria Stokman
Original Assignee
Merels B V B A
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 Merels B V B A filed Critical Merels B V B A
Priority to NL2005654A priority Critical patent/NL2005654C2/en
Application granted granted Critical
Publication of NL2005654C2 publication Critical patent/NL2005654C2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/22—Arrangement of ship-based loading or unloading equipment for cargo or passengers of conveyers, e.g. of endless-belt or screw-type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B65G65/02—Loading or unloading machines comprising essentially a conveyor for moving the loads associated with a device for picking-up the loads
    • B65G65/16—Loading or unloading machines comprising essentially a conveyor for moving the loads associated with a device for picking-up the loads with rotary pick-up conveyors
    • B65G65/20—Paddle wheels
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/22—Component parts
    • E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Ship Loading And Unloading (AREA)

Description

P87824NL00
Title: An excavator and a method for unloading bulk goods
The invention relates to an excavator for unloading bulk goods from a ship hold, comprising a platform and an elevating conveyor carried by the platform, the elevating conveyor being pivotably connected, near a first end thereof, to the platform allowing a second end of the conveyor to be raised and 5 lowered.
For overseas transport of bulk goods, ships such as hoppers are known having a bulk that can be loaded and unloaded with bulk goods, such as sand, grain etc. Some bulk good ships contain specific equipment, also called an excavator, for removing bulk material from the hold to provide the ship 10 with unloading capabilities for transferring the bulk material to a quay where the ship has moored.
Known excavators designed for removing the bulk material comprise a platform located above the hold and an elevating conveyor oriented to the bow or the wheel house of the ship. Near a first end of the conveyor, the 15 platform and the conveyor are pivotably connected so that a second end of the conveyor may pivot in a substantially vertical plane. The conveyor is provided with blade-like elements or buckets for shovelling, with its second end, bulk material from the hold for transport towards the conveyor’s first end. From the conveyor’s first end, the bulk material can then be transported to a quay area 20 using further conveyor systems.
Though such known excavators may operate in a satisfying manner, some problems may arise. In practice it appears that the excavator may not be able to remove all bulk material from the hold, in particular bulk material that is located near corners of the hold. Further, bulk material near certain bottom 25 sections can not be removed by the excavator or only when sacrificing valuable bulk storage space. In addition, the unloading capacity of the known excavator is limited.
2
It is an object of the invention to provide an excavator according to the preamble that is more effective. In particular the invention aims at providing an excavator according to the preamble that can remove bulk material from corners of the hold more easily. Thereto, the excavator according 5 to the invention further comprises a separate feeding unit associated with the elevating conveyor for feeding bulk material from the ship hold to a receiving section of the conveyor, near the conveyor’s second end, wherein the separate feeding unit comprises a pair of bucket wheels rotatably connected, near the conveyor’s second end, to opposite side sections, respectively, of the conveyor.
10 By applying a separate feeding unit for feeding the bulk material, corners of the hold - that may be located adjacent to the conveyor’s side sections - can be reached more easily by excavator elements that are designed to grip the bulk material, so that bulk material at these corner regions can be shovelled more easily leading to a more effective unloading process. Further, 15 by applying the separate feeding unit, the feeding function and the conveying function of the excavator are performed by separate elements, viz. by the feeding unit and the conveyor, respectively, so that said elements can be optimized for their specific function. As a result, the individual elements can be implemented for a lower cost price and/or for meeting higher functional 20 requirements, thereby potentially rendering the excavator more efficient, more robust and/or less expensive. Higher functional requirements may include an increased unloading capacity, e.g. up to approximately 4500 tons per hour or more, or an extended life time of excavator components.
Similarly, by applying a pair of bucket wheels on opposite side 25 sections of the conveyor, the feeding unit can reach the side corners of the hold relatively easily, thereby further increasing the feeding properties of the excavator.
By connecting the elevating conveyor pivotably to the platform such that the conveyor may raise and lower, the feeding unit associated with the 3 elevating conveyor is allowed to follow the top surface of the bulk material in the hold.
Further, by connecting the elevating conveyor pivotably to the platform for swivelling around a substantial vertical axis, the feeding unit has 5 at least two independent degrees of freedom, thereby allowing a flexible position control of the feeding unit. It is noted that a mechanism allowing two independent degrees of freedom for the feeding unit can also be arranged otherwise, e.g. by arranging the platform such that it is movable with respect to the hull of the ship.
10 In a preferred embodiment according to the invention, the horizontal orientation of the elevating conveyor is reversible with respect to a substantial vertical axis, thereby allowing that the hold can be unloaded on opposite sides of the platform. In an advantageous manner, a front section of the hold as well as a back section of the hold can thus be unloaded while the platform is located 15 above the hold, so that in principle the entire hold including all bottom sections can now be unloaded by the excavator since the elevating conveyor can be oriented both to the bow and to the wheel house of the ship. It this context, it is noted that the excavator can also be arranged such that the vertical swivel range of the elevating conveyor restricted, e.g. to a 90° range or 20 less, thereby potentially reducing complexity and manufacturing costs of the excavator construction.
It is further noted that arranging the excavator such that the horizontal orientation of the elevating conveyor is reversible with respect to the substantial vertical axis can not only be applied in combination with an 25 excavator according to claim 1 but also, more generally, in combination with an excavator for unloading bulk goods from a ship hold, comprising a platform and an elevating conveyor carried by the platform, the elevating conveyor being pivotably connected, near a first end thereof, to the platform allowing a second end of the conveyor to be raised and lowered.
30 Further, the invention relates to a method for unloading bulk goods.
4
Other advantageous embodiments according to the invention are described in the following claims.
By way of example only, embodiments of the present invention will now be described with reference to the accompanying figures in which 5 Fig. 1 shows a first schematic partial cross sectional side view of a ship according to the invention;
Fig. 2a shows a partial cross section top view of the ship of Fig. 1;
Fig. 2b shows a partial schematic top view of the elevator in Fig. 2 in detail; and 10 Fig. 3 shows a schematic partial cross sectional side view of a ship known from the prior art.
The figures are merely schematic views of preferred embodiments according to the invention. In the figures, the same reference numbers refer to equal or corresponding parts.
15 Figure 1 shows a first side view of a ship 1 according to the invention including a partial cross sectional view. The ship 1 belongs to the class of so-called hoppers, comprising a hold 2 for transporting bulk goods 3 such as sand. Further, the ship comprises an excavator 4 that is arranged above the hold 2.
20 The excavator 4 is arranged for unloading the bulk goods 3 from the ship hold 2 to a quay where the ship has moored. The excavator 4 comprises a platform 5 and an elevating conveyor 6 carried by the platform 5. The elevating conveyor 6 has a first end 7 and a second end 8, opposite to the first end 7. Near the first end 7, the elevating conveyor 6 is pivotably connected to 25 the platform 5, thus allowing the second end 8 of the conveyor 6 to be raised and lowered. During raising and lowering, the conveyor 6 pivots with respect to a pivot axis P that is preferably horizontally oriented. Thereto, the excavator 4 is provided with a hoisting structure 9 for raising and lowering the second end 8 of the elevating conveyor 5 in a raising direction R and a lowering 30 direction L, respectively. The hoisting structure 9 might e.g. include a rigid 5 frame 10 and a hydraulically driven telescopic construction 11. However, the hoisting structure might also be implemented otherwise, e.g. using a winch construction. Alternatively, the excavator might be designed without a hoisting structure, e.g. by using an actuator that is integrated with the 5 conveyor for autonomous raising lowering movements.
Figure 1 shows the conveyor 6 both in a raised position RP and in a lower position LP.
The excavator further comprises a separate feeding unit 12 for feeding bulk material 3 from the ship hold 2 to a receiving section of the 10 conveyor 6, near the conveyor’s second end 8.
In the embodiment shown in Fig. 1, the separate feeding unit 12 comprises a bucket wheel 13 provided with buckets 14 arranged circumferentially on the bucket wheel 13 that is rotatably connected to the conveyor 6.
15 Figure 2a shows a partial cross section top view of the ship 1. As visualized, the feeding unit 12 comprises a pair of bucket wheels 13a,b rotatably connected, near the conveyor’s second end 8, to opposite side sections 17a,b, respectively, of the conveyor 6.
Figure 2b shows a partial schematic top view of the elevator 6 in Fig. 20 2 in detail, in particular the second end 8 of the elevator 6.
By providing the pair of bucket wheels 13a,b on opposite side sections 17a,b of the conveyor 6 bulk material in corners of the hold 2 can be reached relatively easily by the excavator 4, especially side corners 18a,b of the hold 2, thereby improving the performance of the excavator. The feeding unit 25 12 is further provided with a driving unit for rotatably driving the bucket wheels 13a,b with respect to a substantially horizontal axis Ai, A2 for shovelling up the bulk material 3 from the ship hold 2 and for throwing the shovelled the bulk material towards a material receiving section 16 of the conveyor 6. Apparently, the rotation axis of the bucket wheels 13a,b might also 30 be oriented otherwise, e.g. tilted with respect to the horizontal axis.
6
During operation of the excavator 4, bulk goods 3 are unloaded from a ship hold 2 by positioning the second end 8 of the conveyor 6 near a local upper surface 15 of the bulk material in the ship hold 2. Further, the separate feeding unit 12 is used for feeding bulk material 2 from the ship hold to the 5 receiving section 16 of the elevating conveyor 6. Then, the bulk material 2 is conveyed along a first conveyor direction Ci to a conveyor assembly that is arranged for moving the bulk material towards a quay or another area where the bulk material is to be collected, e.g. the hold of another ship.
The bucket wheels 13a,b are arranged for feeding the shovelled bulk 10 material towards the material receiving section 16 of the conveyor 6 in a feeding direction Fi, F2, respectively, that has a component substantially transverse with respect to the longitudinal axis C of the elevating conveyor 6. By arranging the feeding directions Fi, F2 with a transverse component, the fed bulk material can be collected in a central area of the conveyor’s receiving 15 section 16.
Optionally, the bucket wheels are provided with radially extending teeth 19 having a tilted orientation regarding the bucket wheel rotating plane R. As a consequence, the bucket wheels 13a,b might be arranged very close to the conveyor’s 6 side sections 17a,b to that side corners 18a,b of the hold 2 can 20 be reached more closely while the feedings directions Fi, F2 might have the transverse component. Further the rotation axis Ai, A2 of the bucket wheels 13 may coincide, thereby simplifying the constructions of the feedings unit 12.
In an alternative embodiment, not shown, the bucket wheel rotating plane R is in line with the feedings direction Fi, F2 so that the rotation axis Ai, 25 A2 of the bucket wheels 13 is tilted with respect to the conveyor’s longitudinal axis C.
In the shown embodiment, the elevating conveyor 6 is further pivotably connected to the platform 5 for swivelling around a vertical axis V so that the conveyor might swivel in a horizontal plane to reach side walls 21 and 30 side corners 18a,b of the hold 2. In Fig. 2a, multiple swivelling positions 30a,b 7 of the elevating conveyor 6 are shown. In principle, the conveyor 6 can also be fixed with respect to the vertical axis V. By making the platform 5 movable in a direction T that is transverse with respect to a longitudinal axis L of the ship hold 2, the conveyor 6 might be moved in said transverse direction T to reach 5 the side edges. Apparently, a construction wherein the platform 5 is movable in the transverse direction T can in principle be combined with a conveyor 6 swivelling around the vertical axis V.
In an advantageous option according to the invention, the horizontal orientation of the elevating conveyor 6 is reversible with respect to a vertical 10 axis V, so that the excavator is arranged for unloading bulk material both forwardly and backwardly with respect to the platform position. In Fig. 2a, multiple reversed swivelling positions 30c,d of the elevating conveyor 6 are shown. In an embodiment that is, from a constructional point of view, designed simpler, the elevating conveyor 6 is allowed to be present in an area that is 15 either forwardly or backwardly with respect to the platform position.
Further, the platform 5 is movable along the longitudinal axis L of the ship hold 2 so that the elevating conveyor 6 can be arranged to feed bulk material from different longitudinal ship hold positions. Therefore, the platform 5 is provided with a chassis having moving members such as wheels 20 22a cooperating with a supporting structure in the ship gangway, e.g. a rail structure 22b.
The excavator 4 also comprises a cross conveyor 25 for conveying bulk material from the first end 7 of the elevating conveyor 6 to a gangway area of the ship 1. Further, the above-mentioned conveyor assembly comprises 25 a main conveyor section 26, a bow conveyor section 27 and an end conveyor section 28 for subsequently moving bulk material from an end section of the cross conveyor 25, near the gangway area of the ship, towards a quay or another collecting area outside the ship. The end conveyor section 28 can be swivelled with respect to a vertical axis B from an operation position 28a 30 wherein an end portion 29 of the end conveyor section 28 extends outside the 8 ship 1 to a standby position 28b wherein the end portion 29 is located on the ship 1.
During operation, the bulk material is fed from the hold 2, received in the receiving section 16 of the elevating conveyor 6, transported to the first 5 end 7 of the conveyor 6, received by the cross conveyor 25, transported to the gangway area, received by the conveyor assembly and transported to outside the ship 1.
Figure 3 shows a schematic partial cross sectional side view of a ship 1 known from the prior art. Here, the excavator 4 is provided with an elevating 10 conveyor 6 that also feeds the bulk goods 3 from the hold 2, without the use of a separate feeding unit. The excavator 4 is shown in a backward position A and a forward position B. Since the orientation of the elevating conveyor 6 can not be reversed with respect to a substantial vertical axis, not the entire hold 2 can be unloaded by the excavator 4. Otherwise, if the longitudinal dimension of 15 the hold 2 is shortened, at the bow side, the excavator 4 might, in principle, unload the entire hold 2. However, then the loading space that the ship might offer is not efficiently used.
As shown in Fig. 1, the elevating conveyor 6 can be arranged in different positions and orientations, viz. in a backward position 6,A and in a 20 reversed forward position 6,B. Clearly, the excavator may now, in principle, reach all sections of the hold 2, thereby enabling an effective and efficient use of the ship loading capacity.
The invention is not restricted to the embodiments described herein. It will be understood that many variants are possible.
25 The excavator can not only be applied in a hopper type ship, but can in principle also be applied in other ship types having a hold that is filled with goods.
Other such variants will be apparent for the person skilled in the art and are considered to lie within the scope of the invention as defined in the 30 following claims.

Claims (12)

1. Graafmachine voor het lossen van bulkgoederen vanuit een scheepsruim, omvattende een platform en een stijg-transportband gedragen door het platform, waarbij de stijg-transportband nabij een eerste uiteinde daarvan verzwenkbaar verbonden is met het platform, om 5 een tweede uiteinde van de transportband op te kunnen heffen en te kunnen laten zakken, waarbij de graafmachine verder een afzonderlijke toevoereenheid omvat die verbonden is met de stijg-transportband voor het toevoeren van bulkmateriaal vanuit het scheepsruim aan een ontvangstdeel van de transportband, nabij het tweede uiteinde van de 10 transportband, waarbij de afzonderlijke toevoereenheid een paar schoepenraderen omvat welke roteerbaar verbonden zijn, nabij het tweede uiteinde van de transportband, aan respectievelijke tegenoverliggende zijdelen van de transportband.CLAIMS 1. Excavator for unloading bulk goods from a ship's hold, comprising a platform and a riser conveyor carried by the platform, the riser conveyor being pivotally connected to the platform near a first end thereof, about a second end of the conveyor belt being able to lift and lower, the excavator further comprising a separate supply unit connected to the ascending conveyor for supplying bulk material from the ship's hold to a receiving part of the conveyor belt, near the second end of the conveyor belt, wherein the separate supply unit comprises a pair of paddle wheels which are rotatably connected, near the second end of the conveyor belt, to respective opposite side parts of the conveyor belt. 2. Graafmachine volgens conclusie 1, waarbij de stijg- 15 transportband voorts verzwenkbaar is verbonden met het platform om te draaien rond een hoofdzakelijk verticale as.2. Excavator as claimed in claim 1, wherein the ascending conveyor is further pivotally connected to the platform for pivoting about a substantially vertical axis. 3. Graafmachine volgens conclusie 1 of 2, waarbij de horizontale oriëntatie van de stijg-transportband omkeerbaar is ten opzichte van een hoofdzakelijk verticale as.Excavator according to claim 1 or 2, wherein the horizontal orientation of the ascending conveyor is reversible with respect to a substantially vertical axis. 4. Graafmachine volgens één van de voorgaande conclusies, waarbij het platform beweegbaar is in een richting welke in hoofdzaak dwars staat ten opzichte van een lengteas van het scheepsruim.Excavator according to one of the preceding claims, wherein the platform is movable in a direction that is substantially transverse to a longitudinal axis of the ship's hold. 5. Graafmachine volgens één van de voorgaande conclusies, waarbij het platform beweegbaar is langs de lengteas van het 25 scheepsruim.5. Excavator as claimed in any of the foregoing claims, wherein the platform is movable along the longitudinal axis of the ship hold. 6. Graafmachine volgens één van de voorgaande conclusies, waarbij de schoepenraderen zijn ingericht voor het toevoeren van het opgeschepte bulkmateriaal aan het materiaalontvangstdeel van de transportband in een toevoerrichting welke een component heeft welke hoofdzakelijk dwars staat ten opzichte van een lengteas van de transportband.Excavator as claimed in any of the foregoing claims, wherein the paddle wheels are adapted for supplying the scooped-up bulk material to the material receiving part of the conveyor belt in a feed direction which has a component which is substantially transverse to a longitudinal axis of the conveyor belt. 7. Graafmachine volgens één van de voorgaande conclusies, waarbij de schoepenraderen zijn voorzien van zich radiaal uitstrekkende 5 tanden met een hellende oriëntatie met betrekking tot het roteervlak van het schoepenrad.7. Excavator as claimed in any of the foregoing claims, wherein the paddle wheels are provided with radially extending teeth with an inclined orientation with respect to the rotating surface of the paddle wheel. 8. Graafmachine volgens één van de voorgaande conclusies, verder omvattende een dwars-transportband voor the transporteren van bulkmateriaal van het eerste uiteinde van de stijg-transportband naar 10 een gangboordgebied van het schip.8. Excavator as claimed in any of the foregoing claims, further comprising a transverse conveyor belt for transporting bulk material from the first end of the ascending conveyor belt to a gangway area of the ship. 9. Graafmachine volgens één van de voorgaande conclusies, verder omvattende een transportbandsamenstel voor het verplaatsen van bulkmateriaal van de dwars-transportband, nabij het gangboordgebied van het schip, naar een kade.Excavator as claimed in any of the foregoing claims, further comprising a conveyor belt assembly for moving bulk material from the transverse conveyor belt, near the gangway area of the ship, to a quay. 10. Graafmachine volgens één van de voorgaande conclusies, verder omvattende een hefstructuur voor het opheffen en laten zakken van het tweede uiteinde van de stijg-transportband.Excavator according to any of the preceding claims, further comprising a lifting structure for lifting and lowering the second end of the ascending conveyor. 11. Schip, zoals een hopper, omvattende een ruim voor het vervoeren van bulkgoederen, verder omvattende een graafmachine 20 volgens één der voorgaande conclusies, waarbij de graafmachine boven het ruim is geplaatst.11. Ship, such as a hopper, comprising a hold for carrying bulk goods, further comprising an excavator 20 according to any one of the preceding claims, wherein the excavator is placed above the hold. 12. Werkwijze voor het lossen van bulkgoederen vanuit een scheepsruim, omvattende het, door middel van het gebruiken van een stijg-transportband, transporteren van bulkmateriaal vanuit het 25 scheepsruim naar een transportbandsamenstel welke is ingericht voor het verplaatsen van het bulkmateriaal naar een kade, waarbij een uiteinde van de stijg-transportband geplaatst is nabij een locaal bovenoppervlak van het bulkmateriaal in het scheepsruim, waarbij de werkwijze verder omvat het toevoeren van bulkmateriaal vanuit het scheepsruim aan een 30 ontvangstdeel van de transportband, nabij het tweede uiteinde van de transportband, met behulp van een afzonderlijke toevoereenheid omvattende een paar schoepenraderen welke roteerbaar verbonden zijn, nabij het tweede uiteinde van de transportband, aan respectievelijke tegenoverliggende zijdelen van de transportband.12. Method for unloading bulk goods from a ship's hold, comprising transporting bulk material from the ship's hold to a conveyor belt assembly which is adapted to move the bulk material to a quay by using a riser conveyor belt an end of the ascending conveyor is placed near a top local surface of the bulk material in the ship's hold, the method further comprising supplying bulk material from the ship's hold to a receiving part of the conveyor, near the second end of the conveyor, using of a separate supply unit comprising a pair of paddle wheels which are rotatably connected, near the second end of the conveyor belt, to respective opposite side parts of the conveyor belt.
NL2005654A 2010-11-09 2010-11-09 An excavator and a method for unloading bulk goods. NL2005654C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2005654A NL2005654C2 (en) 2010-11-09 2010-11-09 An excavator and a method for unloading bulk goods.

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Application Number Priority Date Filing Date Title
NL2005654A NL2005654C2 (en) 2010-11-09 2010-11-09 An excavator and a method for unloading bulk goods.
NL2005654 2010-11-09

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB558189A (en) * 1942-06-16 1943-12-24 Wilkinsons Runfold Ltd Improvements relating to excavators of the conveyor type
DE3315078A1 (en) * 1983-04-26 1984-10-31 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg BAND CONVEYOR FOR THE VERTICAL OR STEEL PROMOTION OF SCHUETTGUT
JPS60161833A (en) * 1984-01-31 1985-08-23 Hitachi Zosen Corp Twin bucket wheel type reclaimer
US5024568A (en) * 1985-01-29 1991-06-18 The Csl Group Inc. Bulk material reclaiming apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB558189A (en) * 1942-06-16 1943-12-24 Wilkinsons Runfold Ltd Improvements relating to excavators of the conveyor type
DE3315078A1 (en) * 1983-04-26 1984-10-31 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg BAND CONVEYOR FOR THE VERTICAL OR STEEL PROMOTION OF SCHUETTGUT
JPS60161833A (en) * 1984-01-31 1985-08-23 Hitachi Zosen Corp Twin bucket wheel type reclaimer
US5024568A (en) * 1985-01-29 1991-06-18 The Csl Group Inc. Bulk material reclaiming apparatus

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