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WO2013050647A1 - Convoyeur et appareil de traitement pour matière minérale - Google Patents

Convoyeur et appareil de traitement pour matière minérale Download PDF

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Publication number
WO2013050647A1
WO2013050647A1 PCT/FI2011/050865 FI2011050865W WO2013050647A1 WO 2013050647 A1 WO2013050647 A1 WO 2013050647A1 FI 2011050865 W FI2011050865 W FI 2011050865W WO 2013050647 A1 WO2013050647 A1 WO 2013050647A1
Authority
WO
WIPO (PCT)
Prior art keywords
conveyor
measuring
processing apparatus
sensor
roll
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.)
Ceased
Application number
PCT/FI2011/050865
Other languages
English (en)
Inventor
Antti Jaatinen
Joona Nikunen
Pauli PIEKKARI
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.)
Metso Finland Oy
Original Assignee
Metso Minerals Oy
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 Metso Minerals Oy filed Critical Metso Minerals Oy
Priority to PCT/FI2011/050865 priority Critical patent/WO2013050647A1/fr
Publication of WO2013050647A1 publication Critical patent/WO2013050647A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/003—Details; specially adapted accessories
    • 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
    • B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors 
    • 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
    • B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
    • B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
    • 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
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/04—Detection means
    • B65G2203/042—Sensors

Definitions

  • the invention relates to a conveyor and a processing apparatus for mineral material.
  • the invention relates particularly, though not exclusively, to measuring mass of material flow with a conveyor.
  • a belt scale has been a solution for mineral material mass measuring.
  • solution scale devices have been arranged in connection with end supports of a conveyor roll.
  • the belt scale is expensive.
  • a cabling to the belt scale is expensive and sensitive to break down.
  • Belt scales are known where a scale device is arranged between the whole belt conveyor and the plane supporting the belt conveyor.
  • a conveyor for mineral material which conveyor comprises a conveyor frame; conveyor rolls which are fitted rotatably in connection with the conveyor frame; and an endless material transport means which is arranged to be moved on and around the conveyor rolls, and at least one of the conveyor rolls is a measuring roll for measuring mass of the material to be transported on the endless material transport means, and the measuring roll comprises a pressure or force sensitive sensor which is able to change a pressure/force directed to the sensor to a signal which is proportional to the mass of the transported material, for measuring mass flow of the material.
  • the measuring roll comprises a signal processing unit which is connected to the sensor and a transmitter for transmitting measuring data wirelessly outside the measuring roll.
  • the conveyor comprises a data transfer unit for receiving the measuring data from the transmitter and transferring to a data processing unit.
  • the conveyor comprises an electromechanical energy conversion unit in connection with the measuring roll for generating electric energy from the rotation movement of the measuring roll, which electric energy is required by the measuring or data transfer arrangement of the measuring roll.
  • the conveyor comprises an electromechanical energy conversion unit in connection with the measuring roll for generating electric energy from the measuring event of the pressure or force sensitive sensor, which electric energy is required by the measuring or data transfer arrangement of the measuring roll.
  • Electric power to the measuring or data transfer arrangement can be obtained, for example, by influencing with pressure or force to a piezoelectric measuring sensor.
  • the measuring roll comprises a battery as an energy source for the measuring or data transfer arrangement of the measuring roll.
  • the sensor comprises an EMFi -film, a PVDF -film, piezo yarn or a mems sensor.
  • the measuring roll comprises a frame which is coated with a coating, and the sensor is arranged between the frame and the coating.
  • the measuring roll comprises a shaft around which a hollow frame is arranged to a shell which is coated with a coating, and the sensor is arranged between the frame and the coating.
  • the hollow frame which is contacting the conveyor belt and which is equipped with the sensor and coated is fitted at ends to the shaft.
  • the ends of the shaft are fitted rotatably in connection with the conveyor frame.
  • the measuring roll comprises a temperature detector.
  • a processing apparatus for mineral material which processing apparatus comprises a conveyor according to some embodiment.
  • the processing apparatus may comprise a crusher.
  • the processing apparatus may comprise a screen.
  • mass flow measuring conveyors may be connected to the processing apparatus for transporting material flows exiting the processing apparatus, and the processing apparatus is configured to define the distribution of the material which is flowing through the processing apparatus from the relation of the mass flows which are exiting via the conveyors.
  • the screen may comprise several screen decks for different mineral material fractions, each screen deck comprises an exit to which is coupled a conveyor which is measuring mass flow, and the processing apparatus is configured to define the distribution of the screened material from the relation of the mass flows which are exiting the screen decks.
  • a processing plant for mineral material which processing plant comprises a conveyor or a processing apparatus according to some aspect or embodiment.
  • temperature data from the temperature detector which is integrated in the measuring roll may be transmitted wirelessly outside the measuring roll. Friction between surface of the measuring roll and the conveyor belt may be monitored with the temperature detection. An increase of temperature causes probable increase of temperature, noticing of which may speed up operations of maintenance. The increase of temperature may indicate, for example, weakening of the surface of the conveyor belt, need for change of the conveyor belt, bad condition of bearings of the measuring roll or some other conveyor roll.
  • a sensor for example, a sensor measuring surface pressure
  • a wireless measuring arrangement may be implemented in a roll of a conveyor of a crusher which enables measuring mineral material mass flow.
  • the whole measuring apparatus may be integrated inside the measuring roll.
  • the measuring roll is easy to mount afterwards also to operating conveyors.
  • the measuring roll comprises a sensor, a wireless transmitter and preferably collection of energy.
  • a wireless receiver through which the measuring data is transferred to a data receiving means such as an automation system outside the conveyor.
  • Measuring of the mass flow in the conveyor is implemented by measuring the force/pressure which is directed to the roll surface.
  • An EMFi -film; a piezo yarn or mems sensors, for example, are suited for measuring the surface pressure of the roll.
  • the sensor(s) are mounted on the surface of the roll after which the roll may be coated with a wear resistant material.
  • the measuring data may be transferred wirelessly from the roll to an automation system.
  • a transmitter in the roll may send measuring data preferably regularly, for example, full-time or at determined intervals.
  • a receiver may be connected to the automation system which receiver transmits the measurements to be used by the automation. ZigBee or another network technology developed on the same low power radio may be used for the data transmission.
  • Energy required by the measuring apparatus may be collected from the rotation movement of the roll. It is assumed then that the measurement is needed only when the roll is rotating.
  • the energy collecting may be implemented, for example, inductively by means of a coil and permanent magnets. Then, no moving and mechanically wearing parts are needed in the system. Measuring rolls may necessary be in use several in the same conveyor and/or system.
  • the measuring roll in the conveyor enables process adjustments which require mass flow.
  • the measurement may be taken as part of sensoring of a mobile or stationary mineral material processing apparatus.
  • the measuring roll may be mounted in operating mineral material conveyors, processing apparatuses and plants, for example, mobile crushing plants.
  • Existing conveyors and processing apparatuses can be modernized.
  • the measuring roll may be mounted without a requirement for mounting cabling, for example, energy supply cables or signal cables required in known belt conveyors.
  • a conveyor scale solution equipped with the measuring roll may be implemented cheaper than a belt scale.
  • the whole electronics required by the measuring roll may be encapsulated inside the measuring roll in safety. No moving or wearing parts are required in the sensor itself.
  • Fig. 1 shows a side view of a processing plant which is suitable for mineral material processing and comprises a conveyor;
  • Fig. 2 shows a principle figure of a measuring roll and of wireless transfer of measuring data
  • Fig. 3 shows a first conveyor element for a conveyor
  • Fig. 4 shows a second conveyor element
  • Fig. 5 shows a third conveyor element
  • Fig. 6 shows a fourth conveyor element
  • Fig. 7 shows a fifth conveyor element.
  • a processing plant of mineral material a crushing plant 200 comprising a crusher 100, for example, a jaw crusher.
  • a feeder 103 and/or a screen for feeding material into the crusher 100 and a conveyor 106 for transferring crushed material further from the crushing plant.
  • the conveyor 106 presented in Fig. 1 comprises a belt 107 arranged or a corresponding endless material transport means which is arranged to proceed around at least one drum 108 or a corresponding turning member.
  • the crushing plant 200 also comprises a power source and a control centre 105.
  • the power source may be for instance a diesel or electric motor, which provides energy to be used by process units and hydraulic circuits.
  • the feeder 103, the crusher 100, the power source 105 and the conveyor 106 are attached to the body 101 of the crushing plant, which in this embodiment also comprises a track platform 102 for moving the crushing plant 200.
  • the crushing plant may also be stationary or totally or partly wheel-based or movable by legs. Alternatively, it may be movable/towable for instance with help of a truck or some other exterior power source.
  • Mineral material may be for instance quarried stone or it may be asphalt or decommissioning waste such as concrete, or brick etc.
  • the crushing plant may be a fixed crushing plant.
  • Fig. 2 shows a principle figure of a measuring roll 10.
  • Conveyor elements are arranged successively in the conveyor 106 which conveyor elements may comprise one or more measuring rolls 10 for measuring mass flow of mineral material. Examples of the conveyor elements are presented in Figures 3 to 7.
  • the measuring roll 10 supports, like the non-measuring rolls of the conveyor 106, the endless material transport means 107.
  • the conveyor 106 comprises the endless material transport means 107 which is arranged to proceed over the conveyor elements such that mass of the mineral material acts via the endless material transport means 107 to the measuring roll 10 of the conveyor element.
  • the material transport means 107 may be for instance a belt, a felt, a wire, lamellas or a corresponding endless structure for transporting mineral material, which structure can be rotated around the conveyor elements.
  • the endless material transport means will be referred to as the conveyor belt 107.
  • the measuring roll 10 shown in Fig. 2 and embodiments of conveyor elements 1 , 2, 3, 4, 5 shown in Figs. 3 to 6 can be used for example in the conveyor 106 of the processing plant in Fig. 1.
  • a conveyor scale may be formed of a conveyor element.
  • the measuring roll 10 comprises a frame 11 which is preferably coated with a wear resistant coating 12.
  • the frame may be a shaft.
  • the frame may be a hollow shaft.
  • a support 14 is arranged in ends 13 of the frame 11 for supporting the measuring roll 10 rotatably in the conveyor element or the conveyor frame.
  • a bearing house 14 represents the support 14 of the measuring roll in Fig. 2.
  • the measuring roll comprises a sensor 15 which is arranged between the frame 11 of the measuring roll and the coating 12.
  • a groove may be formed in the frame 11 for the sensor or the sensor may be fixed onto a cylindrical frame without a groove in the underside.
  • the coating is formed cylindrical from the outside for instance by grinding.
  • the sensor 15 is located on the entire length of the measuring roll frame (preferably with the exception of narrow edge regions of the measuring roll for protecting the sensor throughout with the coating 12).
  • the sensor may be located as a continuous band spirally round the measuring roll as in Fig. 2, but also a sensor arranged as a linear zone is possible.
  • the sensor must not be uniform but the sensor may be formed of several successive portions.
  • the sensor 15 of the measuring roll 10 comprises preferably a force or pressure sensitive measuring sensor, for example, a film or a strip sensor.
  • the force which the mineral directs to the measuring roll when the sensor 15 rotates under the conveyor belt can be measured with the sensor.
  • the mineral material causes a deformation to the underside of the coating 12 which deformation is proportional to the mass of the mineral material, and the coating layer acts as a spring. The deformation presses the sensor 15 which reacts to the deformation by producing an electrical signal.
  • the sensor 15 is an electromechanical (for instance, piezoelectrical) film which is able to change the pressure/force directed to the sensor to an easy treatable signal (for instance, an electrical signal) which is proportional to the mass of the mineral material.
  • the sensor 15 is for instance an EMFi ((Electro- Mechanical Film) film sensor which can be a permanently electrically charged foam film. Also a PVDF film is possible. Also piezo yarn or a mems sensor are suited to the sensor.
  • the presented film materials are not intended to be invention limiting. More generally, the film material is of type which is able to change the pressure/force which is directed to it to a signal which can be lead to a data processing unit where the signal can be processed in a way known in measuring signal processing.
  • the measuring roll 10 comprises a transmitter 16 which is connected to the sensor 15 for transmitting the measuring data wirelessly to a data transfer unit 17 which is receiving the measuring data.
  • a digital radio signal is used for data transmission from the transmitter 16 to the data transfer unit 17.
  • the signal of the sensor 15 is processed before transmission wherein the measuring roll 10 comprises a signal processing unit which is connected to the sensor 15 and a transmitter 16.
  • the electric energy required by the signal processing unit and the transmitter 16 ( and, if necessary, the data transfer unit 17) can be obtained from a battery (not shown) which is rotating with the measuring roll or most suitable the electric energy is generated by means of the rotation of the measuring roll.
  • the electric energy can be formed with an electromechanical energy conversion unit, such as an induction unit 18, which is arranged in connection with the support 14 of the measuring roll in Fig. 2.
  • the induction unit comprises for instance a coil and permanent magnets wherein no wearing parts are needed.
  • the electric energy can be sent wirelessly from the induction Unit 18 to the signal processing unit and the transmitter 16 (and, if necessary, to the data transfer unit 17).
  • the data transfer unit 17 can be fixed for instance to the frame of the conveyor 106 and coupled wirelessly or by means of a cabling to an upper level control, for example a control system of the mineral material processing plant.
  • FIGs. 3 to 7 there are presented some schematical examples of conveyor elements 1 , 2, 3, 4 and 5 for the conveyor 106 according to embodiments of the invention.
  • the conveyor element is attached for instance to the frame of the conveyor 106 which frame may comprise a beam structure (not shown in the figures).
  • the conveyor elements 1 to 5 presented in the Figures 3 to 7 comprise one or more measuring rolls 10 which are preferably supported at their ends.
  • the stationary support 14 of the measuring roll 10 which support is enabling the rotation of the roll, is preferably arranged to the frame of the conveyor or the conveyor element is formed supporting independently the measuring rolls and the non-measuring rolls wherein the conveyor element is suspended in the frame of the conveyor (the frame is not shown in the figures).
  • the support 14 is denoted with triangles in the Figs. 3 to 7.
  • Two adjacent conveyor rolls can be connected also by means of a joint 19 which is denoted with a circle in Figs. 3 to 7.
  • the joint 9 is not supported to the frame of the conveyor or the self supporting frame of the conveyor.
  • Fig. 3 shows a simple conveyor element 1 which comprises one measuring roll 10 which is preferably supported at its ends.
  • the material to be conveyed can be held on the conveyor belt 107 for instance by means of side walls to be arranged in the frame of the conveyor 106.
  • Fig. 4 shows a second conveyor element 2 which comprises two measuring rolls 10. Both ends of the measuring rolls are supported stationary and rotatable at their ends by means of supports 14. Two measuring rolls are arranged in an angled position such that the conveyor belt can form a troughlike moving base for mineral material.
  • Fig. 5 shows a third conveyor element 3 which comprises two measuring rolls 10. Two measuring rolls are arranged in an angled position such that the conveyor belt can form a troughlike moving base for mineral material.
  • the outer ends of the measuring rolls are supported stationary and rotatable at their ends by means of supports 14 and the inner ends are connected to each other by means of a joint 19.
  • Fig. 6 shows a fourth conveyor element 4 which comprises three adjacent measuring rolls 10. Both ends of each measuring roll are supported stationary and rotatable at their ends by means of supports 14.
  • the outer measuring rolls are arranged in an angled position in relation to a horizontal measuring roll located in the middle such that the conveyor belt can form a troughlike moving base for mineral material.
  • Fig. 7 shows a fifth conveyor element 5 which comprises three adjacent measuring rolls 10 in the same position as in Fig. 6.
  • the outer ends of the outer measuring rolls are supported stationary and rotatable at their ends by means of supports 14.
  • the measuring roll located in the middle is connected at its ends by means of a joint 19 to the inner ends of the outer measuring rolls.
  • mass flow measuring conveyors are connected to the processing apparatus for conveying material flows exiting the processing apparatus, and the processing apparatus is configured to define the (product) distribution of the material which is flowing through the processing apparatus from the relation of the mass flows which are exiting via the conveyors.
  • the screen comprises several screen decks for different mineral material fractions, each screen deck comprises an exit to which is coupled a mass flow measuring conveyor, and the processing apparatus is configured to define the (product) distribution of the screened material from the relation of the mass flows which are exiting the screen decks.
  • the gyratory crusher comprises a conveyor by means of which the crushed material is conveyed to a screen with four decks, the decks of the screen having mesh sizes 26 mm, 18 mm, 11 mm and 6 mm.
  • the oversize fraction from the 26 mm screen is conveyed back to the crusher.
  • the oversize fraction from the 18 mm deck is conveyed with a first conveyor to a first pile [product 15/20 mm].
  • the oversize fraction from the 11 mm deck is conveyed with a second conveyor to a second pile [10/15 mm].
  • the oversize fraction from the 6 mm deck is conveyed with a third conveyor to a third pile [5/10 mm].
  • the undersize fraction from the 6 mm deck is conveyed with a fourth conveyor to a fourth pile [0/5 mm].
  • the relative distribution of the product piles is adjusted by changing setting, stroke and/or rotation speed of the crusher and a result can be seen real- time, for example, from measuring results of conveyor scales of conveyors which are leading to the four piles.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Crushing And Grinding (AREA)

Abstract

La présente invention concerne un convoyeur (106) pour matière minérale, comprenant : une armature de convoyeur; des rouleaux de convoyeur fixés rotatifs à l'armature du convoyeur; et un moyen de transport sans fin de matière qui est conçu pour se déplacer sur et autour des rouleaux du convoyeur. Au moins un des rouleaux du convoyeur est un rouleau de mesure (10) servant à mesurer la masse de la matière à transporter sur le moyen de transport sans fin de matière. Le rouleau de mesure (10) comprend un capteur sensible de pression ou de force (15) qui est capable de convertir une pression/force appliquée sur le capteur en un signal proportionnel à la masse de la matière transportée, afin de mesurer le débit massique de la matière.
PCT/FI2011/050865 2011-10-07 2011-10-07 Convoyeur et appareil de traitement pour matière minérale Ceased WO2013050647A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/FI2011/050865 WO2013050647A1 (fr) 2011-10-07 2011-10-07 Convoyeur et appareil de traitement pour matière minérale

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2011/050865 WO2013050647A1 (fr) 2011-10-07 2011-10-07 Convoyeur et appareil de traitement pour matière minérale

Publications (1)

Publication Number Publication Date
WO2013050647A1 true WO2013050647A1 (fr) 2013-04-11

Family

ID=45531880

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2011/050865 Ceased WO2013050647A1 (fr) 2011-10-07 2011-10-07 Convoyeur et appareil de traitement pour matière minérale

Country Status (1)

Country Link
WO (1) WO2013050647A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013225535A1 (de) * 2013-12-11 2015-06-11 Phoenix Conveyor Belt Systems Gmbh Förderanlage mit Einrichtung zur Ermittlung einer Beladung eines Fördergurtes
DE102015220737A1 (de) 2015-10-23 2017-04-27 Bayerische Motoren Werke Aktiengesellschaft Tragrolle sowie Rollenbahn und Fördervorrichtung mit Tragrolle
DE102017128309A1 (de) * 2017-11-29 2019-05-29 Minebea Intec Aachen GmbH & Co. KG Waage mit einer Transporteinrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3727849A (en) * 1971-11-23 1973-04-17 Allis Chalmers Apparatus for the method of liberating and removing fibrous material from a mineral ore
GB2128345A (en) * 1982-10-08 1984-04-26 Mitchell Cotts Engineering Aus Weigh frame
EP0718218A2 (fr) * 1994-12-20 1996-06-26 Bridgestone Corporation Bande transporteuse
US20040173440A1 (en) * 2001-06-05 2004-09-09 Harald Mauch Measurement and detection roller
US20110204169A1 (en) * 2010-01-29 2011-08-25 David Pitchford Screeen assembly for a mineral processor
DE102011011300A1 (de) * 2010-02-23 2011-08-25 SEW-EURODRIVE GmbH & Co. KG, 76646 Rollenantrieb und Verfahren zum Steuern einer Anlage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3727849A (en) * 1971-11-23 1973-04-17 Allis Chalmers Apparatus for the method of liberating and removing fibrous material from a mineral ore
GB2128345A (en) * 1982-10-08 1984-04-26 Mitchell Cotts Engineering Aus Weigh frame
EP0718218A2 (fr) * 1994-12-20 1996-06-26 Bridgestone Corporation Bande transporteuse
US20040173440A1 (en) * 2001-06-05 2004-09-09 Harald Mauch Measurement and detection roller
US20110204169A1 (en) * 2010-01-29 2011-08-25 David Pitchford Screeen assembly for a mineral processor
DE102011011300A1 (de) * 2010-02-23 2011-08-25 SEW-EURODRIVE GmbH & Co. KG, 76646 Rollenantrieb und Verfahren zum Steuern einer Anlage

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013225535A1 (de) * 2013-12-11 2015-06-11 Phoenix Conveyor Belt Systems Gmbh Förderanlage mit Einrichtung zur Ermittlung einer Beladung eines Fördergurtes
DE102013225535B4 (de) * 2013-12-11 2015-06-25 Phoenix Conveyor Belt Systems Gmbh Förderanlage mit Einrichtung zur Ermittlung einer Beladung eines Fördergurtes
DE102015220737A1 (de) 2015-10-23 2017-04-27 Bayerische Motoren Werke Aktiengesellschaft Tragrolle sowie Rollenbahn und Fördervorrichtung mit Tragrolle
DE102015220737B4 (de) 2015-10-23 2025-02-06 Bayerische Motoren Werke Aktiengesellschaft Tragrolle sowie Rollenbahn und Fördervorrichtung mit Tragrolle
DE102017128309A1 (de) * 2017-11-29 2019-05-29 Minebea Intec Aachen GmbH & Co. KG Waage mit einer Transporteinrichtung

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