• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    11 ABSTRACT The invention relates to a handling device (1 ) for a liner element (2) of a grinding mill. The handling device (1) comprises at least one attachmentelement (3, 4) arranged to be attached to said liner element (2), and a liftingelement (7) adapted to be connected to a lifting means for lifting said handlingdevice (1). The handling device (1) is characterized in that said lifting element(7) has an adjustable lifting point (P) such that said handling device (1) can beadapted in relation to the centre ofgravity of said liner element (2). Theinvention also relates to a method for handling a liner element of a grindingmill using a handling device. Elected for publication: Fig. 1.
    公开号:SE1350425A1
    申请号:SE1350425
    申请日:2013-04-05
    公开日:2014-10-06
    发明作者:Lars Furtenbach；Kamran Kermanshahi；Felipe Andrés Contreras Melgarejo；Clive Heath；William S Thome
    申请人:Metso Minerals Sweden Ab；
    IPC主号:
    专利说明:

    AWAPATENT AB Kontor/HandläggareMalmö/Christian Winblad/NPN Metso Minerals (Sweden) AB Ansökningsnr Vår referens SE-21062222 1 DEVICE AND METHOD FOR HANDLING A LINER ELEMENT OF AGRINDING MILL Technical fieldThe invention relates to a device and method for handling a linerelement of a grinding mill.
    Background artGrinding mills are normally used to grind mine ore or primary crusher product. One type of grinding mills comprises a drum, in which the material tobe ground, i.e. the charge, is ground by rotating the drum. The drum is eitherhorizontally or vertically orientated. The charge is ground by the action ofimpacts of the charge on the inside wall surface of the drum, as well asimpacts of portions of the charge with each other. ln some types of horizontaldrum mills, called a Ball mill or Pebble mill, balls of hard material, areintroduced in the drum, with the charge. When the drum is rotated, the chargeis ground also by the action of impacts from the balls. The mill product caneither be finished size ready for processing, or an intermediate size ready forfinal grinding in a second grinding mill, such as a Ball mill, Autogenous orSemi-Autogenous mill.
    Another type of grinding mill comprises a container in which an agitatoris arranged. Grinding media, such as steel balls or ceramic or naturalpebbles, is provided in the container. Water and the material to be ground arefed into the container. By rotating the agitator, the charge is agitated, suchthat the grinding media grinds the material to be ground by abrasion andattrition. Also this type of grinding mill may be orientated both vertically andhorizontally.
    The inside parts of these types of grinding mills are heavily exposed towear during the grinding process. Therefore, the inside parts of a grinding millis normally covered with some kind of wear protection, such as wear-resistantliner elements. These liner elements are large, heavy and difficult to handle in a safe and reliable way. Different types of tools and lifting devices have beenprovided in order to be able to handle the liner elements in a way that is safefor the maintenance personnel. The lifting tools are normally attached to aplurality of fixed lifting points on the liner element that is intended to bemoved. However, a problem arises using these types of conventional liftingtools. Due to the wear, the centre of gravity of the liner element will begradually displaced during its use. This complicates the lifting process whenthe same lifting tool is used in connection with the fixed lifting points of theliner element for both new and worn down liner elements.
    Summarv of the invention lt is an objective of the present invention to provide an improvement ofthe above technique and prior art. More particularly, it is an objective of thisinvention to provide an improved handling device for a safe and reliablehandling ofa liner element of a grinding mill.
    According to a first aspect, these and other objects, and/or advantagesthat will be apparent from the following description of embodiments, areachieved, in full or at least in part, by a handling device for a liner element ofa grinding mill, comprising at least one attachment element arranged to beattached to the liner element, and a lifting element adapted to be connectedto a lifting means for lifting the handling device. The handling device ischaracterized in that the lifting element has an adjustable lifting point suchthat the handling device can be adapted in relation to the centre ofgravity ofthe liner element. The centre of gravity of the liner element will be displacedduring use due to wear. The new handling device is advantageous in that itslifting point is adjustable in order to meet the changes of the liner element,while still using the original and fixed lifting points provided in the linerelement. This will render the entire handling process of the liner element safeand reliable, both prior to, during and after use of the liner element in agrinding mill, using one and the same handling device.
    The handling device may comprise an elongated beam, which createsa stability of the device and makes it easy to manufacture.
    The handling device may further comprise a stabilizing elementadapted to engage with the liner element. The stabilizing element may extendin a transverse direction from the handling device in order to engage with anedge of the liner element. The effect of the stabilizing element is an increasedstabilization during the lifting process of the liner element. The stabilizingelement may comprise any one of the group consisting of a chain, a wire anda bar, which are all preferred embodiments of the invention.
    The handling device may comprise a first and a second attachmentelement provided on a first and a second end of the handling device, therebycreating stability of the handling device. Each one of the first and secondattachment elements may comprise a rotatable shaft having a through holeadapted to receive an attachment means. The rotatable shafts make itpossible to align the lifting points of the handling device in relation to eventualinclined surfaces on the liner element. lnclined surfaces may appear on thesurfaces of the liner element due to wear of the same. The rotatable shafts ofthe first and second attachment element preferably extend in a transversedirection in relation to a longitudinal direction of the handling device.
    The handling device may comprise a first and second attachmentmeans, the attachment means being adapted to attach the liner to thehandling device via the rotatable shafts of the first and second attachmentelement and lifting points of the liner element. The attachment means may beof any suitable sort, such as a pin, a bolt or a screw. The attachment meansis preferably provided through the lifting points of the liner element from thebottom section of the same and secured to the handling device on the topsection of the liner element. This way, no service personnel need to belocated underneath the liner element during the fastening operation to thehandling device.
    The lifting element may be provided on an upper section of thehandling device, which facilitates the use fastening operation between thelifting element and the lifting means which will be used for lifting the handlingdevice. The lifting element may comprise a plurality of through holes, eachthrough hole being adapted to receive the lifting means for lifting the handlingdevice. This is advantageous in that the handling device in a simple and reliable way may be adapted in relation to the centre of gravity of the linerelement.
    The handling device is preferably used in connection with a verticalmill, which may be called a vertical tower mill or stirred media detritor.
    According to a second aspect, these and other objects are achieved, infull or at least in part, by a method for handling a liner element of a grindingmill using a handling device. The method comprises attaching at least oneattachment element of the handling device to the liner element, andconnecting a lifting element of the handling device to a lifting means for liftingthe handling device. The method is characterized by adjusting a lifting point ofthe lifting element in order to adapt the handling device in relation to thecentre ofgravity of the liner element. The method may be performed usingany suitable type of handling device and is not limited to for use in connectionwith the handling device described in the present application.
    Other objectives, features and advantages of the present invention willappear from the following detailed disclosure, from the attached claims, aswell as from the drawings. lt is noted that the invention relates to all possiblecombinations of features.
    Generally, all terms used in the claims are to be interpreted accordingto their ordinary meaning in the technical field, unless explicitly definedotherwise herein. All references to “a/an/the [element, device, component,means, step, etc.]” are to be interpreted openly as referring to at least oneinstance of said element, device, component, means, step, etc., unlessexplicitly stated otherwise.
    As used herein, the term “comprising” and variations of that term arenot intended to exclude other additives, components, integers or steps.
    Brief Description of the DrawinqsThe above, as well as additional objects, features and advantages of the present invention, will be better understood through the followingillustrative and non-limiting detailed description of embodiments of the presentinvention, with reference to the appended drawings, where the samereference numerals may be used for similar elements, and wherein: Fig. 1 is a perspective view of a handling device according to anexemplary embodiment of the present invention attached to a new linerelement, and Fig. 2 is a perspective view of the handling device in Fig. 1 attached toa worn liner element.
    Detailed Description of Preferred Embodiments of the lnventionFig. 1 illustrates a handling device 1 attached to an unutilized liner element 2 intended for use as wear protection in a grinding mill (not shown).The handling device 1 has a first attachment element 3 provided on a first end5, a second attachment element 4 provided on a second end 6, and a liftingelement 7 provided on an upper section of the handling device 1 and adaptedto be connected to a lifting means (not shown) for lifting the handling device1. Each one of the first and second attachment elements 3, 4 has a rotatableshaft 8, 9 comprising a through hole 10, 11, respectively. The rotatable shafts8, 9 of the first and second attachment element 3, 4 extend in a transversedirection in relation to a longitudinal direction of the handling device 1. Therotatable shaft 8 of the first attachment element 3 is adapted to receive a firstattachment means 12 via the through hole 10, and the rotatable shaft 9 of thesecond attachment element 4 is adapted to receive a second attachmentmeans 13 via the through hole 11. The first and second attachment means12, 13 is used to attach the liner element 2 to the handling device by beingintroduced through fixed lifting points 14, 15 of the liner element 2 andsubsequently through the through holes 10, 11 of the first and secondattachment elements 3, 4 of the handling device 2, thereby connecting theliner element 2 to the handling device 1. The first and second attachmentmeans 12, 13 may be of any suitable sort, but are in this embodimentconstituted by a bolt and a nut. The lifting element 7 of the handling device 1has an adjustable lifting point P so that the handling device 1 can be adaptedin relation to the centre of gravity of liner element 2. ln this embodiment, thelifting element 7 comprises a plurality of through holes 16, each of which isadapted to receive the lifting means for lifting the handling device 1. Thus, thelifting point P of the handling device 1 is changed by simply transferring the lifting means between the through holes 16 of the lifting element 7. The liftingelement 7 is provided on an upper section of the handling device 1 in order tomake it easy to access for the service personnel. The handling device 1further comprises a stabilizing element 17. The stabilizing element 17 extendsin a transverse direction from the handling device 1 and is adapted to engagewith an outer edge of the liner element 2 in order to increase the stabilizationof the lifting process of the liner element 2. The stabilizing element 17 may beof any suitable material. However, in this embodiment, the stabilizing element17 is constituted by a metal chain with a U-shaped grip means attached to itsouter end. ln Fig. 2, the handling device 1 attached to a worn liner element 2 isillustrated. The lifting point P of the handling device 1 has been adjusted inrelation to the new centre of gravity of the liner element 2. The adjustmenthas been carried out by simply transferring the lifting means to one of thethrough holes 17 of the lifting element corresponding to the new centre ofgravity of the liner element 2.
    When a liner element 2 of a grinding mill is to be attached or detached,the handling device 1 is provided within the grinding mill. Thereafter, the firstattachment means 12 is introduced through one of the fixed lifting points 14 ofthe liner element 2 and further to and through the though hole 10 in therotatable shaft 8 of the first attachment element 3. The first attachmentelement 3 is then secured on the upper section of the handling device 1using, for example, a nut. Then, the second attachment means 13 isintroduced through another one of the fixed lifting points 15 of the linerelement 2 and further to and through the though hole 10 in the rotatable shaft9 of the second attachment element 4. The second attachment element 4 isthen secured on the upper section of the handling device 1 using, forexample, a nut. Lastly, the lifting point P of the lifting element 7 is adjusted, ifnecessary, in relation to the centre of gravity of the liner element 2. A liftingmeans can thereafter be connected to the lifting point P of the lifting element7 and operate the liner element 2. As a precautionary measure, the stabilizingelement 17 extending transversely from the handling device 1 may be attached to an outer edge of the liner element 2, thereby increasing thestability of the lifting process.
    The skilled person realizes that a number of modifications of theembodiments described herein are possible without departing from the scopeof the invention, which is defined in the appended claims.
    For instance, the lifting element may be designed in another way aslong as the lifting point of the handling device is adjustable. One single or aplurality of grooves may be used instead of holes.
    The components of the handling device may be manufactured of anysuitable material having a satisfactory set of characteristics. The sameapplies to their shape and size.
    The attachment means may be constituted by an element which has athreaded bottom section which is connected to a top section comprising aloop. The attachment means is attached to the lifting device by means of theattachment element which is passed through the loop of the attachmentmeans, and attached to the liner element by the threaded bottom sectionwhich is passed through the fixed lifting point of the liner element.
    权利要求:
    Claims (14)
    [1] 1. A handling device (1 ) for a liner element (2) of a grinding mill,comprising at least one attachment element (3, 4) arranged to be attached to saidliner element (2), and a lifting element (7) adapted to be connected to a lifting means forlifting said handling device (1), c h a r a c t e r i z e d in th at saidliftingelement(7)hasan adjustable lifting point (P) such that said handling device (1) can be adapted in relation to the centre of gravity of said liner element (2).
    [2] 2. A handling device (1) according to claim 1, wherein said handlingdevice (2) comprises an elongated beam.
    [3] 3. A handling device (1) according to claim 1 or 2, further comprising astabilizing element (17) adapted to engage with said liner element (2).
    [4] 4. A handling device (1) according to claim 3, wherein said stabilizingelement (17) extends in a transverse direction from said handling device (1 ).
    [5] 5. A handling device (1) according to claim 3 or 4, wherein saidstabilizing element (17) comprises any one of the group consisting of a chain,a wire and a bar.
    [6] 6. A handling device (1) according to any one of the preceding claims,wherein said handling device (1) comprises a first and a second attachmentelement (3, 4) provided on a first and a second end (5, 6) of said handlingdevice (1).
    [7] 7. A handling device (1) according to claim 6, wherein each one ofsaid first and second attachment elements (3, 4) comprise a rotatable shaft(8, 9) having a through hole (10, 11) adapted to receive an attachment means(12, 13).
    [8] 8. A handling device (1) according to claim 7, wherein said rotatableshaft (8, 9) of said first and second attachment element (3, 4) extend in atransverse direction in relation to a longitudinal direction of said handlingdevice (1).
    [9] 9. A handling device (1) according to claim 7 or 8, wherein saidhandling device comprises a first and second attachment means (12, 13),said attachment means (12, 13) being adapted to attach said liner element (2)to said handling device (1) via said rotatable shafts (8, 9) of said first andsecond attachment element (3, 4) and lifting points (14, 15) of said linerelement (2).
    [10] 10.A handling device (1) according to any one of the preceding claims,wherein said lifting element (7) is provided on an upper section of saidhandling device (1).
    [11] 11.A handling device (1) according to any one of the preceding claims,wherein said lifting element (7) comprises a plurality of through holes (16),each through hole (16) being adapted to receive said lifting means for liftingsaid handling device (1).
    [12] 12.A handing device (1) according to any one of the preceding claims,wherein said grinding mill is a vertical grinding mill.
    [13] 13.A method for handling a liner element of a grinding mill using ahandling device, comprisingattaching at least one attachment element of said handling device to to said liner element, and connecting a lifting element of said handling device to a lifting meansfor lifting said handling device, c h a r a c t e r i z e d b y adjusting a Iifting point of said Iiftingelement in order to adapt said handling device in relation to the centre ofgravity of said liner element.
    [14] 14.A method according to claim 13, wherein said grinding mill is avertical grinding mill.
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    同族专利:
    公开号 | 公开日
    SE537169C2|2015-02-24|
    AU2014201893A1|2014-10-23|
    BR102014008276A2|2015-08-04|
    AU2014201893B2|2018-08-16|
    CL2014000847A1|2015-01-23|
    BR102014008276B1|2021-05-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3596968A|1970-01-09|1971-08-03|Behring Corp|Lifting apparatus|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1350425A|SE537169C2|2013-04-05|2013-04-05|Apparatus and method for handling a feed element of a mill|SE1350425A| SE537169C2|2013-04-05|2013-04-05|Apparatus and method for handling a feed element of a mill|
    AU2014201893A| AU2014201893B2|2013-04-05|2014-04-02|Device and method for handling a liner element of a grinding mill|
    CL2014000847A| CL2014000847A1|2013-04-05|2014-04-04|Handling device for a mill lining element for mineral grinding, comprises a coupling element, and a lifting element having an adjustable lifting point; method to manipulate a cladding element of a mill.|
    BR102014008276-0A| BR102014008276B1|2013-04-05|2014-04-07|dhandling device for a lining element of a grinding mill|
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