EP2879797A2 - Outil à insérer pour un rotor d'un broyeur à percussion à rotation - Google Patents

Outil à insérer pour un rotor d'un broyeur à percussion à rotation

Info

Publication number
EP2879797A2
EP2879797A2 EP13718153.3A EP13718153A EP2879797A2 EP 2879797 A2 EP2879797 A2 EP 2879797A2 EP 13718153 A EP13718153 A EP 13718153A EP 2879797 A2 EP2879797 A2 EP 2879797A2
Authority
EP
European Patent Office
Prior art keywords
tool
clamping
clamping surface
tool insert
rotor
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.)
Withdrawn
Application number
EP13718153.3A
Other languages
German (de)
English (en)
Inventor
Erfindernennung liegt noch nicht vor Die
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.)
Betek GmbH and Co KG
Original Assignee
Betek GmbH and Co KG
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 Betek GmbH and Co KG filed Critical Betek GmbH and Co KG
Publication of EP2879797A2 publication Critical patent/EP2879797A2/fr
Withdrawn legal-status Critical Current

Links

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
    • B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
    • B02C13/06—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor
    • 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
    • B02C13/28—Shape or construction of beater elements
    • B02C13/2804—Shape or construction of beater elements the beater elements being rigidly connected to the rotor
    • 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
    • B02C13/28—Shape or construction of beater elements
    • B02C2013/2808—Shape or construction of beater elements the beater elements are attached to disks mounted on a shaft

Definitions

  • the invention relates to a tool insert for a rotor of a Rotationspratlbre- chers with a mallet, which has a head with a working part and a fastening ⁇ supply foot, wherein the mounting foot has a pointing in the feed direction front clamping surface and an opposite directed to the rear rear clamping surface.
  • Such a rotor is known from DE 38 07 176 A1.
  • the rotor to be ⁇ nem outer periphery with four mutually offset by 90 ° are arranged tool holders is provided.
  • Tool inserts are interchangeably mounted in these tool holders.
  • the tool inserts comprise flails and clamping elements.
  • the tool inserts are ⁇ represents in the tool holders inserted therein, and clamped by means of the clamping elements.
  • the flails are provided for this purpose in the region of their mounting feet with recesses, in these recesses engage the clamping elements with nose-shaped Keüvorsprüngen.
  • considerable forces sometimes act on the flails. These are strongly stressed in the area of their tool feet to bending. In case of excessive stress, for example, when reinforcing steel parts or the like are contained in the rock material to be crushed, the stresses may become so high that a seal fracture occurs.
  • the object of the invention is to improve the reliability of a rotary pruning crusher.
  • This object is achieved in that in the region of the rear clamping surface, a projection projects rearwardly beyond the rear clamping surface, wherein the approach between two mutually radially offset clamping surface parts of the rear clamping surface is arranged.
  • the approach is arranged opposite to the feed direction behind the front clamping surface. Then, the flail between two functional surfaces of the rotor can be clamped so that the "moment pole" by which the flail is claimed, can be moved to the area of the approach or in the vicinity.
  • An easily manufactured Schlegelgins results when it is provided that the front and the rear clamping surface are parallel to each other.
  • the attachment is wedge-shaped.
  • the head may form a discharge surface in the region of its front side pointing in the feed direction, which is provided with a tooth-shaped contouring and / or the head has an open space with a tooth-shaped contouring opposite to the feed direction behind the working part.
  • the tooth-shaped contours form inclined Praii- areas at which the impact force of impacting rock elements is decomposed into force components.
  • the contouring of the discharge surface and / or the free surface pass into tooth-like surface parts of the working part in order to achieve further wear optimization.
  • a more aggressive cutting geometry with improved comminuting effect is achieved via this geometry of the working parts.
  • a possible inventionsvanante is such that the head has a projection which protrudes opposite to the feed direction over the clamping surface. In this way, the clamping surface is covered with the projection, so that penetration of crushed material is impeded in the attachment point between the flail and the tool holder. Then the flail can be easily changed from excessive pollution easily.
  • the projection protects the interface between the rotor and flail from the abrasive attack of convenientlyiflie sequential rock material.
  • a particularly preferred variant of the invention is such that a clamping part is supported on the front clamping surface, and that the clamping part has on its opposite front face of the clamping surface two wedge surfaces at an angle to each other. About the two wedge surfaces a clearly guided adjusting movement can be introduced into the clamping part with high clamping forces. It can be provided in particular that a clamping element is used which has two wedges, wherein the wedges with an adjusting device are mutually adjustable, and that in each case a wedge rests on a Keilfiphie.
  • the object of the invention is also achieved with a rotor for a rotary impact crusher with one or more tool carriers, which are provided with tool holders for receiving tool inserts, the tool carriers having surface portions, characterized in that the surface portions are equipped at least in regions with wear protection elements, which are arranged at a distance from one another and which project beyond the surface sections or are at least partially inserted into the surface section (s).
  • the wear protection elements protect the surface sections from the abrasive wear attack of the crushing material. In the spaces between the wear protection elements fine rock material can collect on the surface sections and forms there a "natural" wear protection.
  • a conceivable design variant is such that the tool carriers are designed as disc-shaped elements which have the circumferentially extending surface portions between the tool holders, and / or that the tool holders are associated with cross member having the / the surface portions.
  • Figure 1 is a perspective view of a rotor of a rotary impact crusher
  • Figure 2 shows the rotor according to Figure 1 in side view
  • FIG. 3 is a perspective view of a component group taken from the rotor according to FIG. 1;
  • FIG. 4 shows the illustration according to FIG. 3 in vertical section
  • Figure 5 shows a flail of the assembly according to Figures 3 and 4 in a perspective view from below;
  • FIG. 6 shows the mallet according to FIG. 5 in a perspective rear view.
  • FIG. 1 shows the rotor of a rotary impact crusher.
  • This has a plurality of disc-shaped tool carrier 10 made of steel material, which are arranged spaced apart parallel to each other.
  • Each tool carrier 10 has on its outer circumference incisions, the tool holders 1 1 form.
  • the two outer tool carrier 10 are equipped with flange 12 and the intermediate tool carrier 10 with openings. Through the flange 12 and the apertures, a drive shaft of the rotary impact crusher pushed through and these are rotatably coupled to the flange 12.
  • the tool carrier 10 have between the tool holders 11 surface portions 13 which are equipped with wear protection elements 14. These wear protection elements 14 are arranged spaced from each other and stand over the Surface sections 13 before.
  • the anti-protection elements 14 have a steel base body with which they are welded onto the surface portions 13.
  • the steel base body wear the surface portions 13 turned away hard material elements, preferably hard metal parts.
  • cross members 20, 70 and a support strip 60 are used for connecting the individual tool carrier 10. These components are barrenartig and welded to the tool carriers 10. This results in a stable assembly.
  • FIG 2 shows the assignment of the cross member 20, 70 and the support bar 60 closer. With reference to Figures 3 and 4, these components are explained in more detail below.
  • the cross member 20 has a front surface 21 which merges at right angles into a bottom 25 and an upper side 22. At the top 22 and the bottom 25 close at obtuse angles wedge surfaces 23, 24 at.
  • the cross member 20 is welded with its front surface 21 and the bottom 25 with the tool carriers 10.
  • the support strip 60 is arranged opposite to the feed direction V behind the cross member 20. It has a bottom-side mounting surface 62, to which a fastening surface 61 connects at the rear. With these Befest Trentsfizzen 61, 62, the support bar 60 is placed on corresponding surfaces of the tool carrier 10 and welded here with this.
  • the front side, the support bar 60 has a contact portion 63, in which a groove-shaped receptacle 64 is recessed.
  • the support strip 60 has a cover surface 66.
  • the cross member 70 has a lower and a rear mounting surface 72, 73, which are also placed on corresponding mating surfaces of the tool carrier 10 and welded with these here. Front side, a recess with a support surface 71 is incorporated in the cross member 70.
  • a brace 50 can be connected to the support bar 60.
  • the mallet 50 has a head 51 to which a mounting foot 52 is integrally formed.
  • the head 51 is equipped with a receptacle 57, in which a working part 56, for example, a hard metal element or the like hard material element, is used.
  • This working part 56 may be suitably connected to the head 51, for example soldered, welded, glued or the like.
  • the design of the bracket 50 can be closer to Figures 5 and 6 refer.
  • the flail 50 has in the region of its fastening foot 52 a rear side, opposite to the feed direction V, clamping surface 59, which is subdivided into two clamping surface parts 59.1, 59.2.
  • the clamping surface parts 59.1, 59.2 are arranged spaced from one another in the radial direction. Between the two clamping surface parts 59.1, 59.2 is a projection 53 back before. In this case, the approach 53 is narrower than the total width of the crucible 50, so that paragraphs 53.1 result.
  • the flail 50 forms a clamping surface 54 which points in the feed direction V.
  • FIG. 5 shows that the head 51 has a working surface at the front and radially above the clamping surface 54, which is provided with a contouring.
  • the contouring forms tooth-shaped elevations, which each form a tooth with two mutually angled tooth flanks.
  • the working parts 56 front on a corresponding contouring, wherein the contouring of the working parts 56 merges into the working surface 55.
  • FIG. 6 shows that the flail 50 likewise has a contouring in the region of the rear side of the head 51.
  • the contouring of dental tiger formed elevations each formed by two mutually angled Zahnfianken.
  • the contouring is formed by two contouring sections that are at an angle to one another, wherein the first contouring section adjoins the working parts 56 directly.
  • the working parts 56 have radially outwardly a roof-shaped geometry, which merges flush in the first contouring section.
  • the second contouring section closes at an angle to the first contouring section, as can be clearly seen in FIG. Both contouring sections form an open space 51 .1.
  • the flail 50 can be inserted into the tool holder 11 in such a way that the projection 53 engages in the receptacle 64 of the support strip 60, as shown in FIG. 4. This insertion movement is limited by means of the clamping surface parts 59.1, 59.2, which abut against the abutment portion 63 of the support bar 60. When inserted, a projection 58 of the head 51 of the bracket 50 projects beyond the interface formed between the clamping surface 59 and the abutment portion 63 and prevents penetration here of rock material. '
  • a clamping element 30 is used for fixing the bracket 50.
  • This clamping element 30 has two wedges 31, each having two mutually opposed clamping surfaces 32.
  • the two wedges 31 are provided with holes through which a set as a screw actuator 33 is inserted.
  • a nut 34 is screwed onto the free end of the screw.
  • a clamping member 40 is further used, which has two mutually angled wedge surfaces 41, 42.
  • the clamping part 40 is limited by means of a support surface 44.
  • the clamping part 40 also has a bottom surface 43 which is placed on the support surface 71 of the cross member 70. As can be seen in FIG.
  • the two wedges 31 lie with their clamping surfaces 32 flat on the wedge surfaces 23, 24 of the cross member 20 and the Keii Jerusalem 41, 42 of the clamping member 40. If now the adjusting device 33 is tensioned and thereby screwed into the nut 34, the wedges 31 move toward each other and slip on the wedge surfaces 23, 24, 41, 42 from. In this case, the clamping member 40 in Figure 4 to the right, that is opposite to the feed direction V, moved. The clamping member 40 presses against the clamping surface 54 of the bracket 50. As a result, the flail 50 is pressed with its clamping surface parts 59.1, 59.2 against the contact portion 63 of the support bar 60. In this way, a stable tension of the bracket 50 is possible.
  • the clamping part 40 slides with its bottom surface 43 guided over the support surface 71. Due to the symmetrical configuration of the wedges 31 and the symmetrical arrangement of the wedge surfaces 23, 24, 41, 42 a linear movement opposite to the feed direction V is introduced into the clamping part 40 , In this way, a reproducible tension of the bracket 50 is possible.
  • one clamping part 40 and one clamping element 30 are used per flail 50.
  • individually each flail 50 can be replaced individually, resulting in a significant reduction in work.
  • only the respective affected flail 50 must be replaced.
  • Figures 1 and 2 show that the respective outer flail 50 are additionally secured with a plate-shaped securing element 67.
  • This securing element 67 is screwed to the support strip 60 with screws 68 (see screw receptacles 69 according to FIG. 3).
  • FIG. 3 illustrates that the cross member 70 has cheeks 74 which position the clamping parts 40 in the correct direction in the axial direction of the rotor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

L'invention concerne un outil à insérer conçu pour un rotor d'un broyeur à percussion à rotation comprenant un battoir pourvu d'une tête présentant une partie de travail et d'un pied de fixation, ce pied de fixation présentant une surface de montage antérieure orienté dans la direction de l'avance et une surface de montage postérieure orientée à l'opposé vers la face arrière. Pour améliorer la sécurité de fonctionnement d'un broyeur à percussion à rotation, une pièce saillante fait saillie vers l'arrière sur la surface de montage postérieure dans la zone de la surface de montage postérieure, ladite pièce ajoutée étant disposée entre deux parties de la surface de montage postérieure décalées l'une par rapport à l'autre dans la direction radiale. Cette invention se rapporte en outre à un rotor conçu pour un broyeur à percussion à rotation présentant de meilleures propriétés de fonctionnement.
EP13718153.3A 2012-04-19 2013-04-15 Outil à insérer pour un rotor d'un broyeur à percussion à rotation Withdrawn EP2879797A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210103451 DE102012103451A1 (de) 2012-04-19 2012-04-19 Werkzeugeinsatz für einen Rotor eines Rotationsprallbrechers
PCT/EP2013/057792 WO2013156436A2 (fr) 2012-04-19 2013-04-15 Outil à insérer pour un rotor d'un broyeur à percussion à rotation

Publications (1)

Publication Number Publication Date
EP2879797A2 true EP2879797A2 (fr) 2015-06-10

Family

ID=48170450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13718153.3A Withdrawn EP2879797A2 (fr) 2012-04-19 2013-04-15 Outil à insérer pour un rotor d'un broyeur à percussion à rotation

Country Status (3)

Country Link
EP (1) EP2879797A2 (fr)
DE (1) DE102012103451A1 (fr)
WO (1) WO2013156436A2 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4871119A (en) 1987-03-06 1989-10-03 Kabushiki Kaisha Kobe Seiko Sho Impact crushing machine
US5320292A (en) * 1992-11-06 1994-06-14 Smith Roger G Mounting for replaceable hammers in impact crusher
DE102005009461B4 (de) * 2005-03-02 2008-01-03 Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg Wechselschlegel
US9259738B2 (en) * 2008-07-25 2016-02-16 Rqi, Inc. Hammer assembly for a rotary material crusher

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013156436A2 *

Also Published As

Publication number Publication date
DE102012103451A1 (de) 2013-11-07
WO2013156436A2 (fr) 2013-10-24
WO2013156436A3 (fr) 2013-12-05

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