EP4309793A2 - Installation de concassage de matières minérales - Google Patents

Installation de concassage de matières minérales Download PDF

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Publication number
EP4309793A2
EP4309793A2 EP23171047.6A EP23171047A EP4309793A2 EP 4309793 A2 EP4309793 A2 EP 4309793A2 EP 23171047 A EP23171047 A EP 23171047A EP 4309793 A2 EP4309793 A2 EP 4309793A2
Authority
EP
European Patent Office
Prior art keywords
rotor
drive
worm shaft
crushing plant
plant according
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.)
Pending
Application number
EP23171047.6A
Other languages
German (de)
English (en)
Other versions
EP4309793A3 (fr
Inventor
Matthias Egger
Daniel Raffelsberger
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.)
Sbm Mineral Processing GmbH
Original Assignee
Sbm Mineral Processing GmbH
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 Sbm Mineral Processing GmbH filed Critical Sbm Mineral Processing GmbH
Publication of EP4309793A2 publication Critical patent/EP4309793A2/fr
Publication of EP4309793A3 publication Critical patent/EP4309793A3/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/30—Driving mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C2013/29—Details devices for manipulating beater elements

Definitions

  • the present invention relates to a crushing plant for minerals according to the preamble of claim 1.
  • Appropriate crushing systems for mineral materials are used for crushing materials, with pieces being removed from a starting material by a crushing, cutting and/or removal process in order to crush them accordingly.
  • Generic crushing systems for mineral materials include at least one rotor, which can be driven by a main drive for material comminution, and at least one auxiliary drive which can be selectively coupled to the at least one rotor and which is designed to rotationally drive the at least one rotor and/or to position it in a maintenance position.
  • a material to be crushed is fed into the crushing chamber, this material to be crushed usually being rocks or other mineral materials.
  • the material to be shredded is, so to speak, "hit" against a baffle plate by blow bars arranged on the rotor, whereby the material to be shredded breaks and is shredded between the rotor and a baffle plate.
  • the crushing system in particular the at least one rotor and optionally the impact plates interacting with the at least one rotor, is subject to high pressure and impact. and exposed to friction, which causes wear over time.
  • Auxiliary drives for positioning a rotor are also known, for example from cutting mills (see also DE 1 211 869 B ), but the forces and loads that occur in cutting mills cannot be compared with those in crushing plants, although the versions known there are also Auxiliary drives cannot be transferred to a crushing plant in an obvious way.
  • auxiliary drives and safety devices are quite complex to handle, with an auxiliary drive having to be brought into contact with the rotor in a complicated manner and then having to be locked using separate safety elements.
  • the object of the present invention is therefore to provide a crushing plant for materials which offers a safer and/or faster and/or simpler option for inspecting, maintaining and/or repairing a rotor.
  • This task is achieved by a crushing system, preferably an impact crusher, for crushing mineral materials with the features of claim 1.
  • a crushing system preferably an impact crusher
  • At least one rotor of the crushing plant for mineral materials can be driven by a main drive for material comminution and at least one auxiliary drive that can be selectively coupled to the at least one rotor is provided, which is designed to rotationally drive the at least one rotor and / or in to position a maintenance position, wherein the at least one auxiliary drive has a worm shaft, which worm shaft is connected by a coupling device with an engagement element - preferably a gear - the at least one rotor, can be brought into engagement.
  • the property of the worm shaft can be used that high gear ratios can be implemented, which in turn leads to - when the worm shaft is in engagement with the at least one rotor via the engagement element - attack forces, which formed by the at least one rotor, does not easily lead to a rotation of the at least one rotor, since this is inhibited by the worm shaft and the high gear ratio.
  • a securing element can thus be implemented by the auxiliary drive itself, which can hold the at least one rotor in a maintenance position, so that - even if the maintenance personnel forget to secure the at least one rotor separately - it is ensured that the at least one rotor is not accessible to the maintenance personnel can make life-threatening movements.
  • a worm shaft and a gear arranged on at least one rotor for example serving as an engagement element, provide a simple and quick way of bringing the worm shaft into engagement with the at least one rotor via a coupling device, whereby the auxiliary drive can be very quickly connected to the at least one rotor can be coupled.
  • Another advantage is that the very heavy and massive dimensions of the at least one rotor can be driven with very small drive forces due to the high transmission forces and translations of the worm shaft, which means that even a manual drive is sufficient, for example would drive the at least one rotor of the crushing plant and/or position it in a maintenance position.
  • Crushing plants can be, for example, impact crushers, horizontal impact crushers, vertical impact crushers, shredders, roller crushers, hammer mills and/or vertical crushers for comminuting mineral materials.
  • a device according to the invention is used in known embodiment variants of the prior art - as described, for example, in the introduction to the description - and / or is subsequently installed in corresponding configurations.
  • the crushing of materials by the crushing system can be understood as breaking, cutting and/or removing a starting material, which leads to smaller pieces of the starting material.
  • the pitch and/or the gear ratio and/or the number of gears of the worm shaft is selected such that self-locking occurs.
  • a pitch angle of the screw shaft is smaller than 5°.
  • a self-locking design of the worm shaft results in the particularly advantageous advantage that there is no need for securing elements at all, which means that at least one rotor can be driven purely by the worm shaft and the auxiliary drive can be secured and further rotation of the at least one rotor can be prevented, so that maintenance or repair personnel can safely carry out maintenance and / or repairs on the at least one rotor when the worm shaft is in engagement with the engagement element.
  • the worm shaft has a helical tooth profile (for example a worm gear).
  • the worm shaft is arranged in a rotational, movement-locking manner on a drive shaft, which drive shaft is connected to at least one drive motor and/or at least one crank, preferably a hand crank.
  • a drive shaft and consequently also the worm shaft can be rotationally driven by at least one drive motor and/or at least one crank, the worm shaft in turn being able to rotationally drive the at least one rotor via the engagement element in order to position it in a maintenance position.
  • the drive shaft is pivotally mounted about a pivot point along its axis of rotation, with the coupling device being able to carry out a pivoting movement of the drive shaft about the pivot point.
  • a simple possibility can be implemented to bring the worm shaft into engagement with the engagement element on at least one rotor via the coupling device - to be precise: a pivoting of the drive shaft - whereby the auxiliary drive can be brought into contact with the at least one rotor.
  • the auxiliary drive can be coupled to at least one rotor for repair or maintenance work and can then be released from the at least one rotor again by an opposite rotary movement, thus enabling further operation by means of the main drive.
  • the drive shaft is mounted in a linearly displaceable manner relative to the rotor, with a linear displacement of the drive shaft being able to be carried out by the coupling device, for example in order to bring a drive shaft designed as a worm shaft into engagement with the engagement element on the rotor.
  • At least one display device which displays a rotational position of the at least one rotor, so that a targeted positioning of the at least one rotor can be carried out using the auxiliary drive.
  • the coupling device has at least one, preferably hydraulic, piston-cylinder unit, wherein a relative position of the worm shaft to the engagement element can be changed by actuating the piston-cylinder unit, wherein the worm shaft can be brought into engagement with the engagement element.
  • the coupling device has a locking device, the worm shaft being able to be locked in at least two positions relative to the at least one rotor, preferably an engagement position and/or an operating position, by means of the locking device.
  • the locking device can provide for the worm shaft and thus the auxiliary drive to engage in an engaging manner State on at least one rotor can be locked in an engaged position in order to be able to prevent unwanted loosening during maintenance and / or repair work on at least one rotor.
  • an operating position - it can be provided that the locking device can be used to lock the worm shaft and thus the auxiliary drive detached from the at least one rotor in order to be able to ensure normal operation of the crushing plant without disruptions, the worm shaft preferably not being in this operating position is in contact with the engagement element.
  • the engagement element preferably the gear
  • the engagement element is rotatably mounted about a rotation axis of the at least one rotor and is connected to the at least one rotor, wherein the worm shaft can be brought into engagement tangentially on the engagement element.
  • the at least one engagement element is arranged as a tooth flank contour on the circumference of the at least one rotor and/or is formed by the at least one rotor itself.
  • the engagement element is formed by a gear on at least one rotor.
  • Tooth flank geometries, gears and/or toothed rings arranged in a material or non-positive manner on the rotor are also entirely conceivable.
  • the gear is arranged directly on at least one rotor.
  • the screw shaft is arranged on a housing of the crushing system.
  • At least one position sensor is provided for detecting a signal representative of a relative position of the worm shaft, preferably wherein the signal can be made available to a control or regulating device of the auxiliary drive.
  • the open-loop or closed-loop control device is designed to enable or shut down the main drive for operation, taking into account the representative signal for the relative position of the worm shaft.
  • a control or regulating device of the crushing system which can determine via a position sensor whether the auxiliary drive is in engagement with the worm shaft on at least one rotor, the main drive being via the at least one control or regulating unit the crushing plant can be shut down when the auxiliary drive is engaged.
  • the open-loop or closed-loop control device only releases the main drive to operate the crushing system when the auxiliary drive with the worm shaft is not in engagement with the engagement element.
  • At least one angle sensor is provided for detecting a signal representative of a rotational position of the at least one rotor, particularly preferably the signal can be provided for a control or regulating device of the auxiliary drive.
  • the open-loop or closed-loop control device is designed to output a signal to the operator and/or to control the auxiliary drive in such a way that a predeterminable position, particularly preferably a predeterminable one, takes into account the signal representative of a rotational position of the at least one rotor Maintenance position of at least one rotor can be reached.
  • the control or regulating unit can be designed as part of the crushing system, part of a machine control or as a separate unit and can be connected or connectable to the crushing system, for example via a data transmission connection.
  • a data transmission connection can preferably be designed as a remote data transmission connection.
  • the remote data transmission connection can be done using a LAN (Local Area Network), WLAN (Wireless Local Area Network), WAN (Wide Area Network) and/or various (Internet) protocols.
  • LAN Local Area Network
  • WLAN Wireless Local Area Network
  • WAN Wide Area Network
  • Internet various protocols.
  • Fig. 1 shows an exemplary embodiment of a crushing plant 1, more precisely an impact crusher.
  • the crushing plant 1 comprises a rotor 3, which can be driven in rotation about a pivot point by means of a main drive and/or an auxiliary drive 8 (which is not shown in this figure for reasons of clarity).
  • the rotor 3 comprises four blow bars 12 arranged on the circumference of the rotor 3, which protrude on the circumference of the rotor 3 and are used to shred materials.
  • blow bars 12 of the rotor 3 form the blow circle 21.
  • the rotor 3 can be driven during operation via the main drive and/or auxiliary drive 8 in the direction of rotation indicated by the black arrow.
  • main drive and the auxiliary drive 8 are designed to drive the rotor 3 in opposite directions of rotation.
  • the impact crusher 1 has a first impact plate 4 and a second impact plate 5, which interact with the rotor 3 - more precisely: the blow bars 12.
  • baffle plates 4, 5 are each connected via a baffle mechanism 16 with a baffle plate drive 6, 15 (which baffle plate drives 6, 15 are articulated to the baffle mechanism 16 for moving the impact mechanism 16 and for adjusting and/or moving the impact mechanism 16 and the baffle plates 4 arranged thereon , 5 are formed) and the impact crusher 1 connected.
  • baffle plates 4, 5 and the baffle mechanism 16 are designed in one piece (monolithic) in a so-called monoblock construction, preferably as a cast part.
  • the first impact plate 4 is pivotally connected to the impact crusher 1 via the impact mechanism 16 and a bearing point 18 and can be moved relative to the rotor 3 via the first impact plate drive 6.
  • the second impact plate 5 is also pivotally connected to the impact crusher 1 via an impact mechanism 16 and a bearing point 18 and can be moved relative to the rotor 3 by means of the second impact plate drive 15.
  • the first baffle plate drive 6 and the second baffle plate drive 15 are linear drives, here for example piston-cylinder units 17, and can be operated via a corresponding hydraulic system.
  • baffle plate drive 6, 15 is designed mechanically, preferably by a spindle drive.
  • the crushing chamber 2 of the impact crusher 1 is released to the environment via an opening in the housing 23 of the impact crusher 1, and material can be fed to the crushing chamber 2 via this opening.
  • the material is shredded by the rotating blow bars 12 on the rotor 3 and accelerated in the direction of the baffle plates 4, 5. A further comminution process occurs at the baffle plates 4, 5.
  • the crushing system of this exemplary embodiment has a third impact plate, which is also often referred to as a grinder 19.
  • This grinder 19 also has grinding bars 24 that can be moved relative to the rotor 3, with the material to be shredded being crushed on the grinding bars 24 with the aid of the blow bars 12 after being shredded on the impact plates 4, 5 before it leaves the impact crusher 1.
  • the grinding bars 24 are in turn connected to the impact crusher 1 via the grinder 19 at a bearing point 18, the grinder 19 being pivotable relative to the rotor 3.
  • This pivoting movement of the grinder 19 is implemented by means of the grinder drive 20.
  • the grinder drive 20 of this exemplary embodiment is implemented as a linear drive - for example a piston-cylinder unit 17.
  • This grinder drive 20 can alternatively or additionally have a mechanical drive, such as a spindle drive.
  • blow bars 12 and/or baffle plates 4, 5, which are usually designed as wearing parts, are replaced and/or reapplied, with maintenance personnel having to enter the crushing chamber 2.
  • Fig. 2 shows a detailed view of a rotor 3 of a crushing plant 1, the rotor 3 being shown isolated with the parts engaging on the rotor 3.
  • the rotor 3 has blow bars 13 in the middle for crushing minerals.
  • the rotor On the sides of the blow bars 13, the rotor can be connected to the housing 23 of the crushing plant 1, not shown here, via the bearing elements 24 and is therefore rotatably mounted on the housing 23.
  • the rotor 3 can be driven via the main drive and a belt engaging on the pulley 25 via the pulley 25, which is connected in a movement-locking manner to the rotor 3.
  • the auxiliary drive 8 is arranged on the rotor 3, which is in the following Figures 3 and 4 should be explained in more detail as a sectional view.
  • FIGS. 3 and 4 show an auxiliary drive 8 in a section, where in Fig. 3 the auxiliary drive 8 is shown in an operating position 26 and in Fig. 4 the auxiliary drive 8 is shown in an engaged position 27.
  • the auxiliary drive 8 has a worm shaft 31, which worm shaft 31 can be brought into engagement by a coupling device 32 with an engagement element 28, more precisely: a gear 29.
  • the gear 29, which serves as an engagement element 28, is connected to the rotor 3 by screw connections 30, whereby - when the worm shaft 31 is in engagement with the gear 29 - a rotational movement of the worm shaft 31 directly (taking the translation into account) into a rotational movement of the rotor 3 is implemented.
  • the gear 29 is also rotationally connected to the rotor 3 by another shaft-hub connection known from the prior art, is connected to the rotor 3 by a material connection and / or is formed in one piece with the rotor 3.
  • the worm shaft 31 of the auxiliary drive 8 is arranged on a drive shaft 33 in a rotationally movement-locking manner.
  • This drive shaft 33 is connected to the drive motor 34, a rotational movement being able to be generated by the drive motor 34 and via the drive shaft 33 (to the worm shaft 31). is transferable.
  • the drive motor 34 can be designed as a hydraulic, electrical or mechanical drive unit.
  • the drive shaft 33 is mounted in a bearing element 38 of the coupling device 32.
  • the drive shaft 33 has a coupling point 37, which, more precisely: in this exemplary embodiment, is designed such that an open-end wrench or a crank can be releasably connected to the drive shaft 33, so that the drive shaft 35 and thus the worm shaft 31 can be driven manually.
  • the coupling point replaces the drive motor 34 as the drive of the auxiliary drive 8.
  • the drive shaft 33 is pivotally connected to the housing 23 of the crushing plant 1 along its axis of rotation 35 about a pivot point 36.
  • a pivoting movement of the drive shaft 33 about the pivot point 36 can thus be carried out via the coupling device 32.
  • the worm shaft 31 can be brought into engagement with the gear 29 via a rotary movement of the drive shaft 33, whereby - when the worm shaft 31 is in engagement with the gear 29 - the auxiliary drive 8 is in an engagement position 27 (according to Fig. 4 ) is located.
  • the auxiliary drive 8 is in an operating position 26 (which is through Fig. 3 is shown), whereby normal operation of the crushing plant 1 can be carried out via the main drive.
  • the coupling device 32 has a hydraulic piston-cylinder unit 17, wherein a relative position of the worm shaft 31 to the engagement element 28 can be changed by actuating the piston-cylinder unit 17, wherein the worm shaft 31 can be pivoted between an operating position 26 and an engagement position 27 .
  • the coupling device 32 which has a piston-cylinder unit 17, can thus lock the worm shaft 31 relative to the rotor 3 in an engagement position 27 and an operating position 26 via the hydraulic system (not shown here for reasons of clarity).
  • the gear 29 is rotatably mounted about a rotation axis of the at least one rotor 3 and is connected to the rotor 3, so that the worm shaft 31 can be brought into engagement tangentially on the gear 29.
  • the worm shaft 31 is connected to the housing 23 of the crushing plant 1 via the drive shaft 33 and the pivot point 26.
  • Fig. 5 shows a schematic representation of a control or regulating unit 7.
  • control or regulating unit 7 can be designed to receive signals from different sensors or drive units, taking these signals into account, signals can in turn be output in order to be able to control or regulate actuators or drives.
  • a position sensor 9 is provided for detecting a signal representative of a relative position of the worm shaft 31, this representative signal for the relative position of the worm shaft 31 can be transmitted to the control or regulating unit 7.
  • control or regulating unit 7 can be designed to control or regulate the piston-cylinder unit 17 of the auxiliary drive 8 in order to bring the worm shaft 31 into engagement with the engagement element 28 provided on the rotor 3, the Worm shaft 31 can be pivoted, for example, between an engagement position 27 and an operating position 26.
  • an angle sensor 10 can be provided, which is designed to detect a rotational position of the rotor 3 and to transmit a representative signal to the control or regulating unit 7.
  • the control or regulating unit 7 can be designed to send a signal to the auxiliary drive 8 - more precisely: the drive motor 34 - taking into account the signal representative of a rotational position of the rotor 3, in order to move the rotor 3 into a predeterminable position with the help of the drive motor 34 position to move.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
EP23171047.6A 2022-07-20 2023-05-02 Installation de concassage de matières minérales Pending EP4309793A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT505422022 2022-07-20

Publications (2)

Publication Number Publication Date
EP4309793A2 true EP4309793A2 (fr) 2024-01-24
EP4309793A3 EP4309793A3 (fr) 2024-03-13

Family

ID=86328475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23171047.6A Pending EP4309793A3 (fr) 2022-07-20 2023-05-02 Installation de concassage de matières minérales

Country Status (2)

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EP (1) EP4309793A3 (fr)
AT (1) AT17966U1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1211869B (de) 1964-10-23 1966-03-03 Alpine Ag Maschinenfabrik Sicherheitsvorrichtung fuer Schneidmuehlen
DE102010015438B4 (de) 2010-04-18 2020-03-26 Kleemann Gmbh Dreh- und Sicherungseinrichtung für Rotoren von Brecheranlagen
EP3481555B1 (fr) 2016-07-05 2021-01-06 Sandvik Intellectual Property AB Dispositif de verrouillage de rotor
EP3481554B1 (fr) 2016-07-05 2021-01-06 Sandvik Intellectual Property AB Dispositif de positionnement de rotor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018207050A1 (de) * 2018-05-07 2019-11-07 Mahle International Gmbh Ventiltrieb für eine Brennkraftmaschine
EP4252910A1 (fr) * 2022-03-31 2023-10-04 Sandvik SRP AB Dispositif de positionnement de rouleau

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1211869B (de) 1964-10-23 1966-03-03 Alpine Ag Maschinenfabrik Sicherheitsvorrichtung fuer Schneidmuehlen
DE102010015438B4 (de) 2010-04-18 2020-03-26 Kleemann Gmbh Dreh- und Sicherungseinrichtung für Rotoren von Brecheranlagen
EP3481555B1 (fr) 2016-07-05 2021-01-06 Sandvik Intellectual Property AB Dispositif de verrouillage de rotor
EP3481554B1 (fr) 2016-07-05 2021-01-06 Sandvik Intellectual Property AB Dispositif de positionnement de rotor

Also Published As

Publication number Publication date
AT17966U1 (de) 2023-09-15
EP4309793A3 (fr) 2024-03-13

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