WO2012083465A1 - Procédé de fixation d'un composant d'usure dans une machine - Google Patents

Procédé de fixation d'un composant d'usure dans une machine Download PDF

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Publication number
WO2012083465A1
WO2012083465A1 PCT/CH2010/000324 CH2010000324W WO2012083465A1 WO 2012083465 A1 WO2012083465 A1 WO 2012083465A1 CH 2010000324 W CH2010000324 W CH 2010000324W WO 2012083465 A1 WO2012083465 A1 WO 2012083465A1
Authority
WO
WIPO (PCT)
Prior art keywords
wear
hole
arrangement
fastening arrangement
fastening
Prior art date
Application number
PCT/CH2010/000324
Other languages
German (de)
English (en)
Inventor
Peter Bader
Original Assignee
Ammann Schweiz Ag
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 Ammann Schweiz Ag filed Critical Ammann Schweiz Ag
Priority to EP10801104.0A priority Critical patent/EP2655900A1/fr
Priority to PCT/CH2010/000324 priority patent/WO2012083465A1/fr
Publication of WO2012083465A1 publication Critical patent/WO2012083465A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F16B19/10—Hollow rivets; Multi-part rivets fastened by expanding mechanically
    • F16B19/1027—Multi-part rivets
    • F16B19/1036—Blind rivets

Definitions

  • the invention relates to a method for fixing a Verschleisskomponente in an area of a machine in which the Verschleisskomponente is subject to abrasion during normal operation of the machine, an assembly produced by the method, a two-shaft force mixer with such an arrangement and a drum dryer for rock chip with a Such an arrangement according to the preambles of the independent claims.
  • a first aspect of the invention relates to a method for fixing a wear component, preferably a wear plate or anti-wear tile, in a region of a machine, in which this wear component is subjected to abrasive wear during the intended operation of the machine.
  • a Verschleisskomponente with a through hole is so arranged on a machine part with a through hole to which the Verschleisskomponente, that their through holes lie on one another. It is also possible for one of the through holes or both through holes to be produced only when the wear component is arranged on the machine part.
  • a fastener assembly having a widened head portion and a foot portion that is expandable is inserted into the mating through holes such that the head portion of the fastener assembly rests axially on the wear component and the expandable foot portion preferably emerges entirely from the through bore formed by the machine portion ,
  • the spreadable foot region is spread open, such that it engages behind the through hole formed by the machine part and the wear component is pulled by the fastening arrangement under pretension against the machine part.
  • a wear component is terminated with a Stepped through hole provided and the fastening assembly inserted into the superimposed through holes such that the head portion of the mounting assembly rests axially within the stepped through hole of the Verschleisskomponente on a step formed therein.
  • the head region of the fastening arrangement is at least partially protected by the wear component from abrasive wear. If the head portion of the attachment assembly is fully received within the stepped through bore of the wear component, which is preferred, it is very effectively protected by the wear component.
  • the graduated through-bore formed by the wear component is partially or completely closed with a removable wear cover, preferably such that the boundaries of the stepped through-hole and the wear cover are substantially flush with the surface.
  • the wear cover is fastened with a pin-like extension formed on its underside in a central bore in the fastening arrangement, preferably by clamping and / or latching.
  • a pin-like extension formed on its underside in a central bore in the fastening arrangement, preferably by clamping and / or latching.
  • a fastening arrangement in which the spreading of the foot region of the fastening arrangement is effected by axial shortening of the distance between the head region and the foot region of the fastening arrangement.
  • the spreading of the foot region is accomplished by axial shortening of the distance between the head and foot area by tightening a central screw of the fastening arrangement. In this way, the axial shortening of the distance between the head and foot area can be easily controlled with simple means.
  • the wear component and the fastening arrangement are matched to one another in such a way that the fastening arrangement, which is received in the stepped through-hole as intended, provides a positive fit against this inside through-hole Twisting around the axis of rotation of the central screw is secured. In this way, it can be prevented that the fastening arrangement can rotate when the central screw is tightened or loosened, which considerably simplifies the assembly or disassembly of the wearing component.
  • a fastening arrangement in which the spreading of the foot covering At least as far as can be undone again that the mounting assembly for an exchange of the wear component against the insertion direction at least from the through hole of the machine part and preferably additionally also from the through hole of the wear component can be removed.
  • a fastening arrangement in which the spreading of the foot region of the fastening arrangement is effected by axial shortening of the distance between the head region and the foot region of the fastening arrangement, it is further preferred that the undoing of the spreading be achieved by reversing the fastening Shortening between the head area and the foot area of the fastening arrangement can take place.
  • a second aspect of the invention relates to an arrangement producible with the method according to the first aspect of the invention.
  • the arrangement comprises a wear component, preferably a wear plate or anti-wear tile, which is fastened with a fastening arrangement on a machine part in a region of a machine in which the wear component is subject to abrasive wear during normal operation of the machine.
  • the fastening arrangement passes through a through hole formed by the wear component at least partially and a through hole formed by the machine part completely, with a head region of the fastening arrangement resting axially on the wear component. At its end facing away from the head region, the fastening arrangement emerges from the through bore formed by the machine part and engages behind with an expanded foot region the through bore formed by the machine part.
  • the Verschleisskomponente is easily securely connected to the machine part and can be exchanged from the wear side in a simple and straightforward way and without expensive maintenance work on the machine part.
  • the through hole of the wear component which is at least partially penetrated by the fastening arrangement, is a stepped through-hole.
  • the head region of the fastening arrangement in this case lies in the stepped through bore of the wear component on a step formed therein.
  • the head region of the fastening arrangement is at least partially protected by the wear component from abrasive wear. If the head region of the fastening arrangement is arranged completely in the stepped passage bore of the wear component, which is preferred, it is very effectively protected by the wear component.
  • the stepped through-hole formed by the wear component is closed with a removable wear cover, preferably such that the boundaries of the stepped through-hole and the wear cover are substantially flush with the surface.
  • the wear cover can be frictionally fitted into the through-bore in such a way that it can be knocked out of the bore by a one-sided impact load, for example by a blow with a chisel on its edge, or it can be tilted in the bore and then levered out of it can.
  • he may, for example, have a predetermined breaking point at which he can be destroyed by a blow and then removed from the hole.
  • the wear component and the wear cover are made of an identical material, preferably of metal or plastic. As a result, wear the wear component and the wear cover evenly, which is preferred in most cases.
  • the fastening arrangement is designed in such a way that, optionally after removal of a wear cover, the spread of the foot region can be canceled at least to the extent that the foot region of the fastening arrangement can be pulled through at least through the through bore formed by the machine part, and preferably additionally also through the through hole formed by the wear component.
  • the fastening device is designed such that the undoing of the spreading can be effected by an axial extension of the distance between the head region and the foot region of the fastening arrangement.
  • the fastening arrangement comprises a sleeve which forms the head region, and an expansion body, which forms the foot region, wherein the sleeve and the expansion body are braced axially against each other via a central screw, under a spreading of the expansion body through the sleeve ,
  • the sleeve has a positive connection in the direction of rotation of the screw with the wear component within the passage bore of the wear component, which is preferred, this will prevent the sleeve from rotating relative to the wear component when the screw is rotated relative to the sleeve. This facilitates the assembly as the disassembly of the mounting assembly significantly.
  • the central screw has a central bore in which the wear cover is fastened by means of a pin-shaped extension formed on its underside, eg by clamping and / or locking the extension in the central bore.
  • the central bore advantageously in its upper region, an inner polyhedron, advantageously a hexagonal edged or a Torx- réellevielkant, which is suitable for engaging a corresponding screwing tool for the purpose of twisting the screw.
  • the central bore and the pin-like extension formed on the underside of the wear cover are designed such that after separation of the wear cover from the pin-like extension, this extension can be pushed into the central bore until the inner polyhedron engages a corresponding one
  • Wrenching tool is accessible.
  • detachment and removal of the attachment arrangement for the replacement of the wear element is considerably simplified since, for example, in the case of one embodiment of the invention, it is much easier to knock it into the central bore by means of a mandrel by means of a pin which is stuck together by corrosion than pulling it out of the bore.
  • a third aspect of the invention relates to a two-shaft force mixer with a wear protection lining comprising a plurality of wear plates, the wear plates each being part of an arrangement according to the second aspect of the invention.
  • a fourth aspect of the invention relates to a drum drier for rock chip with a wear protection lining of several Verschleissplat- th, wherein the wear plates are each part of an arrangement according to the second aspect of the invention.
  • Fig. 1 shows an inventive arrangement in section
  • FIG. 2 shows the arrangement from FIG. 1 in a first development phase in section
  • Fig. 3 shows the arrangement of Fig. 1 in a second phase of development in section.
  • FIG. 1 shows an arrangement according to the invention in the form of a wear plate 1, which is fastened with a special fastening arrangement 3 to a machine structure 2 to be protected against wear.
  • Verschleissplatte 1 has at the attachment point on a two-stepped through hole 11, 13, 14, which is formed in that in a cylindrical, step-free through hole 11 of the wear plate 1, a mounting plate 12 is flush welded surface flush with the underside of the wear plate 1, which only half Has thickness of the wear plate 1, a central through-bore 14 has and on its upper side a concentric with the through hole 14 aligned square recess 13 has.
  • the machine structure 2 to be protected has a stepless cylindrical through-hole 15, which is aligned concentrically with the through-hole 11, 13, 14 of the wear plate 1.
  • the fastening arrangement 3 comprises a sleeve 9, which forms the head region 4 of the fastening arrangement 3 with a flange-like edge 19, and an expansion body 10 with a plurality of splayed arms 16, which forms the foot region 5 of the fastening arrangement 3.
  • the sleeve 9 and the spreader 10 are clamped axially against each other via a central screw 7, such that the sleeve 9 rests with the flange-like edge 19 under axial pressure bias in the square recess 13 on the mounting plate 12 and the splayed arms 16 of the spreader 10 below axial pressure prestress on the back of the machine structure 2 to be protected.
  • the wear plate 1 is pulled by the fastening assembly 3 under pretension against the machine structure 2 and thus secured thereto.
  • the flange-like edge 19 of the sleeve 9, which forms the head region 4 of the fastening arrangement 3, is designed as a square flange, such that it forms a positive connection in the direction of rotation of the
  • Screw 7 forms with the recess 13 of the mounting plate 12 and prevents so that upon rotation of the screw 7, the sleeve 9 and with this the entire mounting assembly 3 can rotate.
  • the stepped through-bore 11, 13, 14 formed by the wear plate 1 is closed with a removable wear cover 6, such that the boundaries of the stepped through-bore 11, 13, 14 and the wear cover 6 substantially are flush with the surface.
  • the Verschleissdeckel 6 is by means of a downwardly projecting on its underside fastening pin 8 in a central bore in the screw 7 of the fastening arrangement 3 attached.
  • the fastening pin 8 has two circumferential grooves, in which retaining rings 17 are arranged, which engage in corresponding circumferential grooves in the central bore of the screw 7 resiliently.
  • Fig. 2 shows the arrangement of Fig. 1 in a first phase of development in section.
  • the wear plate 1 is arranged on the machine structure 2 such that the through bores 11, 13, 14, 15 of the wear plate 1 and the machine structure 2 concentric on each other.
  • the fastening assembly 3 in the state, as shown in Fig. 2, is inserted from the wear side in the through holes 11, 13, 14, 15, until the sleeve 9 with the flange-like edge 19 in the square recess 13 of the mounting plate 12 is present. In this state, the fastening assembly 3 prevents only by positive locking that the wear plate 1 can be moved horizontally relative to the machine structure 2.
  • a suitable hex key is placed in the at the upper end of the central bore of the screw 7 of the mounting arrangement Hexagon inserted 18 and the screw 7 then rotated so that the axial distance between the head part 4 of the mounting assembly 3 forming sleeve 9 and the foot part 5 of the mounting assembly 3 forming spreader 10 shortened.
  • the expansion body 10 is pulled onto the expansion cone 20 of the sleeve 9, so that the arms 16 formed by this 10 are spread apart and, as a result, the through-put.
  • Gangsbohrung 15 of the machine structure 2 engage behind.
  • the fixing pin 8 of the Verschleissdeckels 6 is inserted into the central bore of the screw 7 until the underside of the Verschleissdeckels 6 rests on the top of the sleeve 9.
  • the circlips 17 arranged on the fastening pin 8 engage resiliently in corresponding circumferential grooves in the central bore of the screw 7, thereby allowing the fastening pin 8 to be pulled out of the central bore of the screw 7 only after overcoming a greater axial restraining force is.
  • the wear cover 6 is levered out of the stepped through-hole 11, 13, 14 of the wear plate 1 with a suitable lever, whereby it either separates from the attachment pin 8 or can be removed together with it. It is also possible to separate the Verschleissdeckel 6 by a lateral impact with a chisel of the fixing pin 8 and then remove. If the Verschleissdeckel 6 separated during removal from the fixing pin 8, so that the latter remains in the central bore of the screw 7, the fixing pin 8 is then hammered deeper into the central bore by means of a suitable mandrel until it at the bottom of the central
  • the hexagon socket 18 am accessible to the upper end of the central bore and the screw 7 can be rotated with a suitable hexagon key such that the axial distance between the head part 4 of the mounting arrangement forming sleeve 9 and the foot part 5 of the mounting arrangement 3 forming spreader 10 extends.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

L'invention concerne un procédé pour la fixation d'un composant d'usure sur une partie de machine (2). En l'occurrence, un composant d'usure (1) avec un alésage traversant (11, 13, 14) est disposé sur une partie de machine (2) avec un alésage traversant (15) de telle sorte que leurs alésages traversants (11, 13, 14, 15) soient superposés. ensuite, un agencement de fixation (3) est inséré avec une partie de tête élargie (4) et une partie de base (5) pouvant être écartée, dans les alésages traversants (11, 13, 14, 15) de telle sorte que la partie de tête (4) repose axialement sur le composant d'usure (1) et que la partie de base (5) ressorte de l'alésage traversant (15) de la partie de machine (2). Ensuite, la partie de base (5) est écartée de telle sorte qu'elle vienne en prise par l'arrière avec l'alésage traversant (15) forme par la partie de machine (2), et le composant d'usure (1) est tiré par l'agencement de fixation (3) avec précontrainte contre la partie de machine (2). Grâce au procédé selon l'invention, il est possible de fixer des composants d'usure qui ne son accessibles que depuis le côté d'usure, de manière simple et peu compliquée, de telle sorte qu'un remplacement de ces composants soit possible sans reconditionnement coûteux des points de fixation.
PCT/CH2010/000324 2010-12-22 2010-12-22 Procédé de fixation d'un composant d'usure dans une machine WO2012083465A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10801104.0A EP2655900A1 (fr) 2010-12-22 2010-12-22 Procédé de fixation d'un composant d'usure dans une machine
PCT/CH2010/000324 WO2012083465A1 (fr) 2010-12-22 2010-12-22 Procédé de fixation d'un composant d'usure dans une machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2010/000324 WO2012083465A1 (fr) 2010-12-22 2010-12-22 Procédé de fixation d'un composant d'usure dans une machine

Publications (1)

Publication Number Publication Date
WO2012083465A1 true WO2012083465A1 (fr) 2012-06-28

Family

ID=44537731

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2010/000324 WO2012083465A1 (fr) 2010-12-22 2010-12-22 Procédé de fixation d'un composant d'usure dans une machine

Country Status (2)

Country Link
EP (1) EP2655900A1 (fr)
WO (1) WO2012083465A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237768A (en) * 1976-11-05 1980-12-09 Hi-Shear Corporation Blind fastener
DE4304338A1 (de) * 1993-02-13 1994-08-18 Geping Dr Ing Wang Verschleißschutzkachel-Funktionsgruppe mit Haftungen für die Mischer-Auskleidungen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006108245A1 (fr) * 2005-04-14 2006-10-19 Brian Investments Pty Ltd Fixation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237768A (en) * 1976-11-05 1980-12-09 Hi-Shear Corporation Blind fastener
DE4304338A1 (de) * 1993-02-13 1994-08-18 Geping Dr Ing Wang Verschleißschutzkachel-Funktionsgruppe mit Haftungen für die Mischer-Auskleidungen

Also Published As

Publication number Publication date
EP2655900A1 (fr) 2013-10-30

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