EP3031526A2 - Rotor and method for repairing a rotor - Google Patents
Rotor and method for repairing a rotor Download PDFInfo
- Publication number
- EP3031526A2 EP3031526A2 EP15196660.3A EP15196660A EP3031526A2 EP 3031526 A2 EP3031526 A2 EP 3031526A2 EP 15196660 A EP15196660 A EP 15196660A EP 3031526 A2 EP3031526 A2 EP 3031526A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- jaw
- rotor
- jaws
- support disks
- support
- 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.)
- Granted
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Classifications
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- 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
- B02C13/09—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor and throwing the material against an anvil or impact plate
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- 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
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- 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
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- 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
Definitions
- the invention relates to a rotor and a method for repairing a rotor for an impact crusher, for crushing of building materials, rock or the like, wherein the rotor consists of a rotor shaft in the axial direction of the rotor shaft laterally abutting or spaced support disks, and arranged on the support disks fastening devices is formed for blow bars, wherein by means of the fastening device a blow bar releasably secured to the support disks, wherein the fastening device is formed by at least two jaws, wherein the jaws are fixedly connected to the support disks, wherein the jaws so spaced apart and arranged on the support disks are that the jaws form a rasp bar recording and the blow bar between the jaws is anordbar.
- the known from the prior art rotors are used in crushing machines, which are regularly referred to as impact crusher or impact mill. These rotors have edges or edges which are formed by so-called blow bars, and the one Crushing a feed material supplied to the crushing effect. A comminution of feed material or feed pieces takes place essentially by impact of the feed pieces.
- the rasp bars arranged on an outer circumference of the rotor hurls the feed pieces against an inner wall of a comminuting space, such that the feed pieces are comminuted when they strike the blow bar or the inner wall.
- the blades or blow bars of the rotor also interact with an impact rocker or baffle plate in the comminuting space.
- the impact rocker is formed substantially plate-shaped and arranged in the crushing space relative to the rotor so that a gap of a certain size is formed between the impact rocker or a lower edge of the impact rocker and the rotor.
- the feed material fed through a feed chute falls onto the rotor and is thrown by the blow bars onto the impact rocker in accordance with a direction of rotation of the rotor and crushed by impact.
- Pieces of feed material which are larger than the formed gap can not pass this and remain in the crushing space until they have a corresponding size for passing through the gap.
- Such rotors are used for the comminution of building materials, such as concrete or rubble, rock or the like.
- the known rotors are generally constructed in such a way that rotor disks surrounding the rotor shaft are arranged on a rotor shaft. These support discs may be spaced from each other or arranged adjacent to each other. On an outer circumference of the support disks or on recesses or grooves formed in the support disks, jaws are regularly arranged which form a blow bar holder. The blow bars can thus be arranged and fixed in each case between the jaws, running in the axial direction of the rotor shaft, on the outer circumference of the rotor.
- the above-described components of the rotor are comparatively solid in order to obtain a flywheel of the rotor, which has a relative Synchronous operation of the rotor in use as well as a flow-free derivation of the forces acting on the rasp bar recording forces ensures.
- the rotor shaft, the support disks and the jaws are regularly made of a cost-effective structural steel and are connected to each other by welding. In this case, all connecting edges are provided with welds to obtain a stable rotor as possible. After welding of the components, the rotor thus formed is annealed stress-free to avoid any stress cracks during operation.
- blow bars are inserted between the jaws in the blow bar holder, whereby the blow bars are fastened in a form-fitting manner in the blow bar holder.
- a blow bar for example, have a nose which is inserted into a matching groove in a jaw or vice versa.
- a blow bar and a jaw each having a groove, in which then, for example, a round rod, extending in the axial direction of the rotor shaft, is inserted. The centrifugal forces acting on the blow bar in the radial direction are then introduced via the positive connection in the jaws or the support disks.
- the blow bar is regularly arranged with a clearance of 3 to 6 mm in the blow bar receptacle, and can move or tilt during operation of the rotor within these limits.
- This game is required to remove the blow bar after a wear of the same again from the blow bar recording.
- a gap formed by the game can be filled with crushed feed material.
- it is important that the jaws of the blow bar recording provide a comparatively large and stable contact surface for the blow bars available.
- the present invention is therefore based on the object, a rotor, a crushing machine with a rotor, and a method for repair of a rotor vorzuschsch, with the or a cost-effective operation of a crushing machine is made possible.
- the rotor according to the invention for an impact crusher, for crushing of building materials, rock or the like is formed from a rotor shaft arranged in the axial direction of the rotor shaft support disks, and arranged on the support disks fastening devices for blow bars, said means of the fastening device a blow bar releasably secured to the support disks is, wherein the fastening device is formed by at least two jaws, wherein the jaws are fixedly connected to the support disks, wherein the jaws are arranged spaced from each other on the support disks such that the jaws form a rasp bar recording and the blow bar between the jaws is anordbar, wherein at least a first jaw with the support disks by means of a screw detachable is connected, wherein the first jaw is formed of a comparatively harder material than the support disks.
- the fastening devices or the blow bar receptacle is designed so that the blow bars can be arranged extending substantially in the axial direction of the rotor shaft.
- the beater bars can be fixed in a form-fitting manner in the rasp bar mount or on the support disks. This reliably prevents the blow bars from unintentionally releasing from the blow bar holder during operation of the rotor.
- At least one first jaw of the at least two jaws of a rasp bar mount is detachably connected to the carrying disks by means of the screw connection.
- the first jaw is formed from a relative to the support disks comparatively harder material.
- the first jaw By using a harder material for the first jaw, material is prevented from breaking out of the jaw as a result of great force acting on the blow bar.
- a use of a harder material is only possible because the first jaw is not or not completely welded to the support disks.
- the first jaw can be fixed by the screw after a glow on the support disks so.
- the fastening is effected by means of the screw connection, the stresses which are common during welding are avoided, as a result of which annealing of the first jaw after mounting on the support disks is unnecessary.
- the first jaw can then have a very high hardness.
- the screw connection also makes it possible to replace any jaws destroyed by an outbreak of material without having to replace the entire rotor.
- the rotor can be at least two on a circumference of the rotor arranged at regular intervals blow bars with each blow bar recordings, or any number of blow bars.
- a second jaw can be detachably connected to the support disks by means of a screw connection, wherein the second jaw can be formed from a comparatively harder material than the support disks.
- the second jaw can thus be designed in the manner of the first jaw, so that then all the jaws of the rasp bar mount are screwed to the support disks and consist of comparatively harder materials.
- the rasp bar recording can, based on a direction of rotation of the rotor, have a front jaw and a rear jaw.
- the front jaw can be made smaller with a cross section than the rear jaw. In the event that only one of the jaws of the rasp bar recording is made of a harder material and has a screw connection with the support disks, this may preferably be the rear jaw.
- the front jaw could then, as known from the prior art, be welded to the support disks.
- recesses or grooves may be formed, in which the jaws are arranged. This makes it possible to attach the jaws not only on a circumference or an outer side of the support disks, but to integrate in the support disks so that the jaws can be supported on the support disks. Forces acting on the jaws in the radial direction of the rotor can be introduced into the support disks in a particularly simple manner.
- a jaw is particularly easy to produce if it is designed as a profile element which extends in the axial direction over an entire length of the rotor.
- the jaws can, for example, also be interrupted over the entire length of the rotor or formed in several parts, so that a jaw section is arranged only in the region of a support disk. A distance between support disks is then not bridged by the jaw. Overall, it is then possible to adapt the jaw to the respective forces acting on the jaw and thus the respective application.
- the blow bar in the blow bar recording interchangeable and be positively attachable to at least one jaw. Consequently, at least one jaw can be designed such that a positive fastening of a blow bar in the blow bar receptacle is possible.
- the blow bar can also be positively fastened with two jaws.
- the screw can be formed directly between the jaw and the support plate, wherein a screw can be used in a side facing the striking strip side surface of the jaw and bolted to the support plate. No further component is then arranged between the jaw and the support disk, so that a force acting on the jaw can be transmitted directly to the support disk.
- a variety of screws can be used to form the screw. It can also be provided to insert the screws exclusively in the radial direction of the rotor shaft in the side surface of the jaw. Essential in the formation of the screw is that a load-bearing, axial cross-section of the support disks is not weakened by the screw.
- the screw can extend transversely through the jaw and exit from a feed material facing away from the bottom of the jaw and be screwed into the support disk.
- An underside facing away from a feed material is understood to mean a underside facing away from a comminution chamber of a comminution machine.
- the screw can extend across the jaw so that the screw is arranged in the direction of acting on the screw, radial force during operation of the rotor.
- a threaded bore within the support disk can also be displaced or arranged in the direction of the rotor shaft, so that a risk of breakage of the support disk as a result of weakened by the threaded bore cross section of the support plate is further reduced.
- connection fuse may be formed for receiving a radial centrifugal force of the jaw. So it can be ensured that even in the case of unintentional loosening or failure of the screw connection between the jaw and the support plate, the jaw is still secured secured to the support plate.
- the force acting on the jaw centrifugal force can be initiated during operation of the rotor via the connection fuse in the support disc by the formation of the connection. It is initially irrelevant in what kind the connection fuse is formed, the connection fuse should always allow easy installation and release of the jaw. Also, by the formation of the connection securing the screw connection essential be relieved, so that the screw only has to absorb low centrifugal forces.
- connection assurance may be formed as at least one axially extending respectively in the jaw and in the support disk longitudinal groove, into which engages a feather key.
- the key can therefore fill the longitudinal groove of the jaw and the longitudinal groove of the support disc.
- the respective longitudinal grooves can then be arranged so that hardly a weakening of a cross section of the support disk takes place and acting on the jaw centrifugal force can be introduced via the feather key in the support disk.
- connection assurance may be formed as at least one axially extending projection in the support disk, which engages over a matching trained paragraph in the jaw.
- the jaw can therefore form the paragraph that can be used below the projection in the support disk.
- the projection can thus fix the jaw positively in the direction of centrifugal force.
- connection security may be formed as at least one Sich ceremoniessschraubtress between the jaw and the support plate, wherein a screw can be inserted in a receiving material facing the top of the jaw and bolted to the support plate.
- the jaw can then, for example, engage over a shoulder formed in the support disk so that a screw can be screwed into the support disk in the direction of the rotor shaft.
- the jaw can then be made comparatively wide, whereby the advantage is achieved that abrasions administrater wear of the rotor can be reduced in the area around the blow bar.
- connection assurance may be formed as at least one axially extending weld between the jaw and the support disk, wherein the weld may extend substantially exclusively on a receiving side facing the top of the jaw.
- the weld then runs exclusively on the top of the jaw or support plate, the weld can be easily removed and replaced.
- cohesive connection a light and arbitrary repeatable assembly and disassembly of the jaw on the support disks is still possible. It is essential that no weld seams are attached to hard-to-reach joint edges of jaw and support plate.
- connection fuses described above can also be combined as needed.
- a protective cap of the rotor On the support disks may, based on a direction of rotation of the rotor, in front of the front jaw, a protective cap of the rotor be releasably secured by means of a screw connection. Since feed material can collect in particular before a blow bar during operation of the rotor, a strong abrasive wear of the rotor can take place in this area. This can be effectively prevented by placing the protective cap in this area. The detachable attachment of the protective cap by means of a screw connection, this is then easily replaceable. Again, it may be provided to form the protective cap of a comparatively harder material than the support disks.
- the protective cap can for example be screwed directly to the support disks on holders provided for this purpose.
- a rotor is exposed to wear on its axial side surfaces in that, in the case of operation of the rotor, feed material also accumulates here and can act on this region of the rotor in an abrasive manner.
- This can be effectively avoided if at the, relative to an axial direction of the rotor shaft, outer support disks each side protection plates of the rotor are arranged, the side protection plates can then be releasably secured by means of a screw on each side surfaces of the outer support disks.
- the side protection plates for outer support disks can be formed in one piece or also in several parts. Preferably, it may also be provided here that the side protection plates are made of a comparatively harder material than the carrier disks.
- the screw connections can be designed so that they are also protected against wear or abrasive action of feed material.
- the side protection plates may project beyond the outer support disks in the radial direction, it being possible to arrange on the side surfaces of the outer support disks or jaws of the sliding securing devices for the blow bars by means of screw connections, and in that case the side protection plates can project beyond the displacement safeguards in the axial direction. The fact that then the side protection plates protrude beyond the outer support disks in the radial direction, a protection of the outer edges of the support disks can be ensured.
- the anti-slip devices can also be protected against wear by the side protection plates.
- the displacement safeguards may be, for example, rod-shaped elements which are releasably secured by means of screws to the outer side surfaces of the support disks and / or jaws.
- the displacement fuses can positively engage in the respective blow bars such that an axial and a radial displacement of the blow bars is prevented.
- the blow bars can have grooves on their front sides into which the sliding securing devices can engage in each case.
- the screw is an expansion screw
- a force acting on the screw connection can be advantageously absorbed by the expansion screw, without causing unwanted movement of the screwed components.
- a bias of the expansion screw and an undesirable loosening of the same due to the operation of the rotor is avoided.
- the rotor can then be used even at very different temperatures, without weakening the screw connection.
- the jaw is particularly wear-resistant if it is made of steel or cast iron having a hardness of at least 200 Brinell (HB), preferably at least 400 Brinell (HB), more preferably at least 500 Brinell (HB). If the rotor has protective caps, side shields or anti-slip devices, these may also be made of this material. Characterized in that the jaw by means of the screw connection is independent of the rotor shaft with the support disks on the support disks mountable, the rotor shaft can be annealed with the support disks without the jaw, so that jaws can be mounted with a comparatively harder material after annealing to the support disks ,
- the crushing machine according to the invention comprises a rotor according to the invention, wherein the crushing machine comprises beater bars, wherein the beater bar consists of a cast material, a fine-grained structural steel or a ceramic insert, wherein the beater bar has a hardness of 150 to 600 Brinell (HB), preferably 350 to 550 Brinell (HB).
- the blow bars can be designed so wear-resistant.
- the rotor is formed of a rotor shaft arranged in the axial direction of the rotor shaft support disks, and arranged on the support disks fastening devices for blow bars, wherein by means of the fastening device a beater bar is detachably fastened to the support disks, wherein the fastening device is formed by at least two jaws, wherein the jaws are fixedly connected to the support disks, wherein the jaws are arranged spaced apart from each other on the support disks, that the jaws form a rasp bar receptacle and the blow bar between the jaws can be arranged, wherein at least one jaw by machining or non-mechanical cutting, in particular flame cutting is removed from the support disks, wherein in a region of the removed jaw threaded holes are formed in the support disks, wherein a first jaw is releasably connected to the support disks by means of a screw, wherein
- the first jaw is therefore a replacement jaw that replaces the jaw originally welded to the support disks.
- the first jaw is exchangeable by means of the trained screw connection.
- the rotor can be used in the event of an irreparable material eruption on the welded jaw by the inventive method for repair on. Further, it is also possible to adapt the rotor, depending on the design of the first jaw in terms of a positive connection with the blow bar, to any type of blow bar. Different fastening systems of blow bars on the market can thus be considered as needed.
- the further advantages concerning the method according to the invention reference is made to the description of advantages of the rotor according to the invention. Further embodiments of the method will become apparent from the dependent claims on the device claim 1.
- FIG. 1 to 8 shows a rotor 10 with blow bars 11.
- the rotor 10 is formed of a rotor shaft 12 and arranged thereon support disks 13 and 14.
- jaws 15 and 16 are arranged, which form a rasp bar mount 17.
- the jaws 15 and 16 are in respective recesses 18 in the support disks 13 and 14 used.
- the jaws 15 and 16 are formed of a comparatively harder material than the support disks 13 and 14 and the rotor shaft 12.
- the support disks 13 and 14 are arranged at a distance from each other on the rotor shaft 12 and welded thereto.
- the jaws 15 and 16, however, are detachably connected via a screw 19 with the support plates 13 and 14 respectively.
- mounting plates 20 for protective caps 21 are welded to the support disks 13 and 14.
- the protective caps 21 are releasably secured in a direction indicated by an arrow 22 of the rotor 10 in front of the jaw 15 position on the rotor 10 with the mounting plates 20 by means of a screw 23 that they can be replaced.
- four side protection plates 25 are releasably secured to side surfaces 24 of the support disks 14 by means of screw 26.
- the blow bars 11 inserted between the jaws 15 and 16 in the blow bar receptacle 17 are secured against displacement by means of sliding securing means 27.
- the displacement lock 27 is designed as a latch 28 and fastened by means of screw 29 releasably secured to the jaws 15 and 16.
- the bolt 28 engages in a groove 30 at end faces 31 of the blow bars 11 a.
- the protective caps 21 and the side protection plates 25 are also formed of a comparatively harder material than the support disks 13 and 14 and the rotor shaft 12.
- the jaws 15 and 16 are inserted into the recess 18, wherein outer sides 32 and 33 of the jaws 15 and 16 are respectively supported on inner sides 34 and 35 of the recess 18 and abut closely against this. Bottoms 36 and 37 of the jaws 15 and 16 abut against a bottom 38 of the recess 18.
- bores 41 are respectively formed on inner sides 39 and 40 of the jaws and extend from the inner sides 39 and 40 to the undersides 36 and 37 transversely through the jaws 15 and 16, respectively.
- screws 42 are inserted into an internal thread 43, which in each case in the support disks 13 and 14 is formed, engage and fix the jaws 15 and 16 fixed in the recesses 18.
- welds 46 and 47 are formed, which connect the jaws 15 and 16 at these locations with the respective support plates 13 and 14 cohesively.
- the welds 46 and 47 can be easily removed here with a cut-off grinder or angle grinder, since they are mounted exclusively on an outer periphery 48 of the support disks 13 and 14, respectively.
- the Fig. 5 shows the blow bar 11, wherein the blow bar 11 has an axially extending groove 49.
- the jaw 16 also has such a groove 50 which is formed so that in the grooves 49 and 50 in an arrangement of the beater bar 11 in the blow bar receptacle 17 between the jaws 15 and 16 a here not closer apparent round rod can be inserted.
- the round rod ensures a positive fixation of the blow bar 11 in the blow bar receptacle 17. Slipping out of the round rod from the grooves 49 and 50 is thereby avoided that they are covered with the bolt 28 in the assembled state.
- the blow bar 11 inserted into the blow bar receptacle 17 has a clearance of 3 to 6 mm relative to the insides 39 and 40 of the jaws 15 and 16, so that the blow bar can at least partially move in the blow bar receptacle 17 during operation of the rotor 10 , This ensures that the blow bar 11 can be removed from the blow bar receptacle 17 again, if an exchange due to wear should be required.
- the Fig. 6 shows the cap 21 with holes 51 for attachment by means not shown here screws via internal thread 52 in the respective mounting plates 20.
- welded stops 54 At a front edge 53 of the cap 21 are welded stops 54, which are supported on the mounting plate 20 and also help avoid any possible damage ,
- the Fig. 7 shows the side protection plate 25 which is formed so that it projects beyond the outer periphery 48 of the support disks 13 and 14, respectively.
- recesses 55 are formed, in each of which the bolt 28 can be used.
- a thickness of the side protection plate 25 is dimensioned such that the side protection plate 25 projects beyond the latches 28 in the axial direction.
- the side protection plate 25 has a plurality of bores 56 and 57, wherein the side protection plate 25 via internal threads 58 on the support plates 14 can be fastened via the holes 56 by means of screws not shown here.
- the Fig. 9 shows a second embodiment of a rotor 59 in a cross-sectional view.
- the rotor 59 is formed of a rotor shaft 60 and support disks 61, which are welded to the rotor shaft 60, wherein jaws 63 and 64 of the rotor 59 are inserted into recesses 62 in the support disks 61.
- the jaws are also screwed by means of a screw 65 with the support plate 61 here.
- grooves 68 and 69 are respectively formed which receive the key 67 such that acting on the jaws 63 and 64 radial centrifugal force can be transmitted via the key 67 on the support plate 61.
- the Fig. 10 shows a rotor 70 in a cross-sectional view, wherein here jaws 71 and 72 next to a screw 73 with a support plate 74 form a connection assurance 75 with a shoulder 76.
- the support plate 74 has projections 78 and 79 which respectively engage over the shoulders 76 and 77 and thus secure the jaws 71 and 72 in a form-fitting manner in a recess 80 in the support disk 74.
- FIG. 11 When in the Fig. 11 shown cross-sectional view of a rotor 81 is in addition to a screw 82 of jaws 83 and 84 with a support plate 85 a connection fuse 86 as Sich ceremoniessverschraubung 87 trained.
- a connection fuse 86 as Sich ceremoniessverschraubung 87 trained.
- the support disk paragraphs 88 and 89 are formed, which are respectively overlapped by projections 90 and 91 of the jaws 83 and 84 respectively.
- bores 92 are formed for screws 93 which are screwed into an internal thread 94 in the support plate 85.
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Abstract
Die Erfindung betrifft einen Rotor (10) sowie ein Verfahren zur Instandsetzung eines Rotors für einen Prallbrecher, zur Zerkleinerung von Baustoffen, Gestein oder dergleichen, wobei der Rotor aus einer Rotorwelle (12) mit in axialer Richtung der Rotorwelle angeordneten Tragscheiben (13, 14) und an den Tragscheiben angeordneten Befestigungsvorrichtungen für Schlagleisten gebildet ist, wobei mittels der Befestigungsvorrichtung eine Schlagleiste (11) lösbar an den Tragscheiben befestigbar ist, wobei die Befestigungsvorrichtung von zumindest zwei Backen (15, 16) ausgebildet ist, wobei die Backen mit den Tragscheiben fest verbunden sind, wobei die Backen derart voneinander beabstandet an den Tragscheiben angeordnet sind, dass die Backen eine Schlagleistenaufnahme (17) ausbilden und die Schlagleiste zwischenliegend den Backen anordbar ist, wobei zumindest eine erste Backe (15, 16) mit den Tragscheiben mittels einer Schraubverbindung (19) lösbar verbunden ist, wobei die erste Backe aus einem vergleichsweise härteren Material ausgebildet ist als die Tragscheiben.The invention relates to a rotor (10) and to a method for repairing a rotor for an impact crusher, for comminuting building materials, rock or the like, the rotor comprising a rotor shaft (12) with carrying disks (13, 14) arranged in the axial direction of the rotor shaft. and arranged on the support disks fastening devices for blow bars is formed, wherein by means of the fastening device a blow bar (11) releasably secured to the support disks, wherein the fastening device of at least two jaws (15, 16) is formed, wherein the jaws firmly connected to the support disks are, wherein the jaws are arranged spaced apart from each other on the support disks, that the jaws forming a rasp bar receptacle (17) and the blow bar between the jaws can be arranged, wherein at least a first jaw (15, 16) with the support disks by means of a screw connection (19 ) Is releasably connected, wherein the first jaw from egg NEM comparatively harder material is formed as the support disks.
Description
Die Erfindung betrifft einen Rotor sowie ein Verfahren zur Instandsetzung eines Rotors für einen Prallbrecher, zur Zerkleinerung von Baustoffen, Gestein oder dergleichen, wobei der Rotor aus einer Rotorwelle mit in axialer Richtung der Rotorwelle seitlich anliegend oder beabstandet angeordneten Tragscheiben, und an den Tragscheiben angeordneten Befestigungsvorrichtungen für Schlagleisten gebildet ist, wobei mittels der Befestigungsvorrichtung eine Schlagleiste lösbar an den Tragscheiben formschlüssig befestigbar ist, wobei die Befestigungsvorrichtung von zumindest zwei Backen ausgebildet ist, wobei die Backen mit den Tragscheiben fest verbunden sind, wobei die Backen derart voneinander beabstandet und an den Tragscheiben angeordnet sind, dass die Backen eine Schlagleistenaufnahme ausbilden und die Schlagleiste zwischenliegend den Backen anordbar ist.The invention relates to a rotor and a method for repairing a rotor for an impact crusher, for crushing of building materials, rock or the like, wherein the rotor consists of a rotor shaft in the axial direction of the rotor shaft laterally abutting or spaced support disks, and arranged on the support disks fastening devices is formed for blow bars, wherein by means of the fastening device a blow bar releasably secured to the support disks, wherein the fastening device is formed by at least two jaws, wherein the jaws are fixedly connected to the support disks, wherein the jaws so spaced apart and arranged on the support disks are that the jaws form a rasp bar recording and the blow bar between the jaws is anordbar.
Die aus dem Stand der Technik bekannten Rotoren werden in Zerkleinerungsmaschinen eingesetzt, die regelmäßig als Prallbrecher oder Prallmühle bezeichnet werden. Diese Rotoren weisen Schneiden oder Kanten auf, die durch sogenannte Schlagleisten ausgebildet werden, und die eine Zerkleinerung eines der Zerkleinerungsmaschine zugeführten Aufgabeguts bewirken. Eine Zerkleinerung von Aufgabegut bzw. Aufgabestücken erfolgt dabei im Wesentlichen durch Prall der Aufgabestücke. Die an einem Außenumfang des Rotors angeordneten Schlagleisten schleudern die Aufgabestücke an eine Innenwandung eines Zerkleinerungsraums, derart, dass die Aufgabestücke beim Auftreffen auf die Schlagleiste oder der Innenwandung zerkleinert werden. Dabei wirken die Schneiden bzw. Schlagleisten des Rotors auch mit einer Prallschwinge oder Prallplatte im Zerkleinerungsraum zusammen. Die Prallschwinge ist im Wesentlichen plattenförmig ausgebildet und im Zerkleinerungsraum relativ zum Rotor so angeordnet, dass zwischen der Prallschwinge bzw. einer unteren Kante der Prallschwinge und dem Rotor ein Spalt einer bestimmten Größe ausgebildet ist. Durch einen Aufgabeschacht dem Zerkleinerungsraum zugeführtes Aufgabegut fällt unter anderem auf den Rotor und wird von den Schlagleisten entsprechend einer Drehrichtung des Rotors auf die Prallschwinge geschleudert und durch Prall zerkleinert. Stücke von Aufgabegut, die größer als der ausgebildete Spalt sind, können diesen nicht passieren und verbleiben im Zerkleinerungsraum so lange, bis sie eine entsprechende Größe zum Passieren des Spalts aufweisen. Derartige Rotoren werden zur Zerkleinerung von Baustoffen, wie beispielsweise Beton oder Bauschutt, Gestein oder dergleichen eingesetzt.The known from the prior art rotors are used in crushing machines, which are regularly referred to as impact crusher or impact mill. These rotors have edges or edges which are formed by so-called blow bars, and the one Crushing a feed material supplied to the crushing effect. A comminution of feed material or feed pieces takes place essentially by impact of the feed pieces. The rasp bars arranged on an outer circumference of the rotor hurls the feed pieces against an inner wall of a comminuting space, such that the feed pieces are comminuted when they strike the blow bar or the inner wall. The blades or blow bars of the rotor also interact with an impact rocker or baffle plate in the comminuting space. The impact rocker is formed substantially plate-shaped and arranged in the crushing space relative to the rotor so that a gap of a certain size is formed between the impact rocker or a lower edge of the impact rocker and the rotor. Among other things, the feed material fed through a feed chute falls onto the rotor and is thrown by the blow bars onto the impact rocker in accordance with a direction of rotation of the rotor and crushed by impact. Pieces of feed material which are larger than the formed gap can not pass this and remain in the crushing space until they have a corresponding size for passing through the gap. Such rotors are used for the comminution of building materials, such as concrete or rubble, rock or the like.
Die bekannten Rotoren sind in der Regel derart aufgebaut, dass auf einer Rotorwelle die Rotorwelle umgebende Tragscheiben angeordnet sind. Diese Tragscheiben können voneinander beabstandet oder aneinander anliegend angeordnet sein. An einem Außenumfang der Tragscheiben bzw. an in den Tragscheiben ausgebildeten Ausnehmungen oder Nuten sind regelmäßig Backen angeordnet, die eine Schlagleistenaufnahme ausbilden. Die Schlagleisten können so jeweils zwischenliegend den Backen, in axialer Richtung der Rotorwelle verlaufend, am Außenumfang des Rotors angeordnet und befestigt werden. Die vorbeschriebenen Bauteile des Rotors sind vergleichsweise massiv ausgebildet, um eine Schwungmasse des Rotors zu erhalten, die einen verhältnismäßigen Gleichlauf des Rotors im Einsatz sowie eine strömungsfreie Ableitung der auf die Schlagleistenaufnahmen wirkenden Kräfte sicherstellt. Die Rotorwelle, die Tragscheiben und die Backen bestehen regelmäßig aus einem kostengünstigen Baustahl und sind miteinander durch Schweißen verbunden. Dabei werden sämtliche Verbindungskanten mit Schweißnähten versehen, um einen möglichst stabilen Rotor zu erhalten. Nach einem Verschweißen der Bauteile wird der so ausgebildete Rotor spannungsfrei geglüht, um eventuelle Spannungsrisse im Betrieb zu vermeiden.The known rotors are generally constructed in such a way that rotor disks surrounding the rotor shaft are arranged on a rotor shaft. These support discs may be spaced from each other or arranged adjacent to each other. On an outer circumference of the support disks or on recesses or grooves formed in the support disks, jaws are regularly arranged which form a blow bar holder. The blow bars can thus be arranged and fixed in each case between the jaws, running in the axial direction of the rotor shaft, on the outer circumference of the rotor. The above-described components of the rotor are comparatively solid in order to obtain a flywheel of the rotor, which has a relative Synchronous operation of the rotor in use as well as a flow-free derivation of the forces acting on the rasp bar recording forces ensures. The rotor shaft, the support disks and the jaws are regularly made of a cost-effective structural steel and are connected to each other by welding. In this case, all connecting edges are provided with welds to obtain a stable rotor as possible. After welding of the components, the rotor thus formed is annealed stress-free to avoid any stress cracks during operation.
Die Schlagleisten werden zwischen den Backen in der Schlagleistenaufnahme eingesetzt, wobei die Schlagleisten formschlüssig in der Schlagleistenaufnahme befestigt werden. Dazu kann eine Schlagleiste beispielsweise eine Nase aufweisen, die in eine übereinstimmend ausgebildete Nut in einer Backe eingeschoben wird oder umgekehrt. Auch kann eine Schlagleiste und eine Backe jeweils eine Nut aufweisen, in die dann beispielsweise ein Rundstab, in axialer Richtung der Rotorwelle verlaufend, eingeschoben wird. Die auf die Schlagleiste in radialer Richtung wirkenden Fliehkräfte werden dann über die formschlüssige Verbindung in den Backen bzw. die Tragscheiben eingeleitet. Weiter ist die Schlagleiste regelmäßig mit einem Spiel von 3 bis 6 mm in der Schlagleistenaufnahme angeordnet, und kann sich während eines Betrieb des Rotors innerhalb dieser Grenzen bewegen, bzw. verkippen. Dieses Spiel ist erforderlich, um die Schlagleiste nach einem Verschleiß derselben wieder aus der Schlagleistenaufnahme entfernen zu können. Ein durch das Spiel gebildeter Spalt kann dabei mit zerkleinertem Aufgabegut verfüllt sein. Gleichwohl ist es wichtig, dass die Backen der Schlagleistenaufnahme eine vergleichsweise große und stabile Anlagefläche für die Schlagleisten zur Verfügung stellen. Durch bei einer Rotation des Rotors auf Außenflächen der Schlagleisten auftreffendes Aufgabegut wirken besonders große Kräfte auf eine obere Kante einer in Rotationsrichtung des Rotors hinteren Backe sowie auf eine untere Kante bzw. Innenfläche der Schlagleistenaufnahme einer vorderen Backe. Hier kann es vorkommen, dass die obere Kante bzw. Fläche der hinteren Backe beschädigt wird. Das heißt, aus der Backe kann ein Materialstück ausbrechen. Je nach Größe des ausgebrochenen Materialstücks kann dieses durch Aufschweißen ersetzt werden. Ein Aufschweißen birgt jedoch die Gefahr eines Bruches einer anderen Schweißnaht an dem Rotor infolge von durch das Aufschweißen erzeugten Spannungen. Auch ist ein ergänzendes Spannungsfrei-Glühen des Rotors erforderlich. Bei vergleichsweise großen Ausbrüchen von Material ist ein Aufschweißen gänzlich unmöglich, so dass der Rotor vollständig durch einen neuen Rotor ersetzt werden muss. In diesem Fall sind die Kosten eines Ersatzes des Rotors infolge einer scheinbar geringen Beschädigung sehr hoch.The blow bars are inserted between the jaws in the blow bar holder, whereby the blow bars are fastened in a form-fitting manner in the blow bar holder. For this purpose, a blow bar, for example, have a nose which is inserted into a matching groove in a jaw or vice versa. Also, a blow bar and a jaw each having a groove, in which then, for example, a round rod, extending in the axial direction of the rotor shaft, is inserted. The centrifugal forces acting on the blow bar in the radial direction are then introduced via the positive connection in the jaws or the support disks. Further, the blow bar is regularly arranged with a clearance of 3 to 6 mm in the blow bar receptacle, and can move or tilt during operation of the rotor within these limits. This game is required to remove the blow bar after a wear of the same again from the blow bar recording. A gap formed by the game can be filled with crushed feed material. Nevertheless, it is important that the jaws of the blow bar recording provide a comparatively large and stable contact surface for the blow bars available. By acting on a rotation of the rotor on the outer surfaces of the blow bars task loads act particularly large forces on an upper edge of a rear in the direction of rotation of the rotor jaw and on a lower edge or inner surface of the blow bar recording a front jaw. Here it may happen that the upper edge or surface of the rear jaw is damaged becomes. This means that a piece of material can break out of the jaw. Depending on the size of the broken piece of material this can be replaced by welding. Welding, however, involves the risk of breakage of another weld on the rotor due to stresses generated by welding. Also, a complementary stress-free annealing of the rotor is required. With relatively large outbreaks of material welding is completely impossible, so that the rotor must be completely replaced by a new rotor. In this case, the cost of replacement of the rotor due to a seemingly small damage are very high.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen Rotor, eine Zerkleinerungsmaschine mit einem Rotor, sowie ein Verfahren zur Instandsetzung eines Rotors vorzugschlagen, mit dem bzw. der ein kostengünstiger Betrieb einer Zerkleinerungsmaschine ermöglicht wird.The present invention is therefore based on the object, a rotor, a crushing machine with a rotor, and a method for repair of a rotor vorzuschschlagen, with the or a cost-effective operation of a crushing machine is made possible.
Diese Aufgabe wird durch einen Rotor mit den Merkmalen des Anspruchs 1, eine Zerkleinerungsmaschine mit den Merkmalen des Anspruchs 19 und ein Verfahren zur Instandsetzung eines Rotors mit den Merkmalen des Anspruchs 20 gelöst.This object is achieved by a rotor having the features of claim 1, a comminuting machine having the features of
Der erfindungsgemäße Rotor für einen Prallbrecher, zur Zerkleinerung von Baustoffen, Gestein oder dergleichen, ist aus einer Rotorwelle mit in axialer Richtung der Rotorwelle angeordneten Tragscheiben, und an den Tragscheiben angeordneten Befestigungsvorrichtungen für Schlagleisten gebildet, wobei mittels der Befestigungsvorrichtung eine Schlagleiste lösbar an den Tragscheiben befestigbar ist, wobei die Befestigungsvorrichtung von zumindest zwei Backen ausgebildet ist, wobei die Backen mit den Tragscheiben fest verbunden sind, wobei die Backen derart voneinander beabstandet an den Tragscheiben angeordnet sind, dass die Backen eine Schlagleistenaufnahme ausbilden und die Schlagleiste zwischenliegend den Backen anordbar ist, wobei zumindest eine erste Backe mit den Tragscheiben mittels einer Schraubverbindung lösbar verbunden ist, wobei die erste Backe aus einem vergleichsweise härteren Material ausgebildet ist als die Tragscheiben.The rotor according to the invention for an impact crusher, for crushing of building materials, rock or the like, is formed from a rotor shaft arranged in the axial direction of the rotor shaft support disks, and arranged on the support disks fastening devices for blow bars, said means of the fastening device a blow bar releasably secured to the support disks is, wherein the fastening device is formed by at least two jaws, wherein the jaws are fixedly connected to the support disks, wherein the jaws are arranged spaced from each other on the support disks such that the jaws form a rasp bar recording and the blow bar between the jaws is anordbar, wherein at least a first jaw with the support disks by means of a screw detachable is connected, wherein the first jaw is formed of a comparatively harder material than the support disks.
Dabei ist es unerheblich, ob die Tragscheiben seitlich aneinander anliegend oder voneinander beabstandet auf der Rotorwelle angeordnet sind. Die Befestigungsvorrichtungen bzw. die Schlagleistenaufnahme ist so ausgebildet, dass die Schlagleisten im Wesentlichen in axialer Richtung der Rotorwelle verlaufend anordbar sind. Dabei können die Schlagleisten formschlüssig in der Schlagleistenaufnahme bzw. an den Tragscheiben befestigt werden. So kann zuverlässig verhindert werden, dass sich die Schlagleisten während eines Betriebs des Rotors aus der Schlagleistenaufnahme unbeabsichtigt lösen. Zumindest eine erste Backe der zumindest zwei Backen einer Schlagleistenaufnahme ist mittels der Schraubverbindung lösbar mit den Tragscheiben verbunden. Darüber hinaus ist die erste Backe aus einem gegenüber den Tragscheiben vergleichsweise härteren Material ausgebildet. Durch die Verwendung eines härteren Materials für die erste Backe wird ein Ausbrechen von Material aus der Backe infolge großer Krafteinwirkung über die Schlagleiste verhindert. Eine Verwendung eines härteren Materials wird jedoch erst dadurch möglich, dass die erste Backe überhaupt nicht oder nicht vollständig mit den Tragscheiben verschweißt ist. Die erste Backe kann so nach einem Glühen an den Tragscheiben durch die Schraubverbindung befestigt werden. Auch dadurch, dass die Befestigung mittels der Schraubverbindung erfolgt, werden die beim Verschweißen üblichen Spannungen vermieden, wodurch sich ein Glühen der ersten Backe nach der Montage an den Tragscheiben erübrigt. Insofern kann die erste Backe dann eine sehr große Härte aufweisen. Durch die Schraubverbindung wird es auch möglich, eventuell durch einen Ausbruch von Material zerstörte Backen auszutauschen, ohne dass der gesamte Rotor ersetzt werden muss. Ein Ersatz einer Backe kann dann im Rahmen eines Wechsels von Schlagleisten einfach erfolgen, so dass neben den Kosten für einen neuen Rotor auch Kosten für Maschinenstillstandszeiten vermieden werden können. Insgesamt kann der Rotor zumindest zwei an einem Umfang des Rotors in gleichmäßigen Abständen angeordnete Schlagleisten mit jeweils Schlagleistenaufnahmen, oder eine beliebige Anzahl von Schlagleisten aufweisen.It is irrelevant whether the support disks are arranged laterally adjacent to each other or spaced apart on the rotor shaft. The fastening devices or the blow bar receptacle is designed so that the blow bars can be arranged extending substantially in the axial direction of the rotor shaft. In this case, the beater bars can be fixed in a form-fitting manner in the rasp bar mount or on the support disks. This reliably prevents the blow bars from unintentionally releasing from the blow bar holder during operation of the rotor. At least one first jaw of the at least two jaws of a rasp bar mount is detachably connected to the carrying disks by means of the screw connection. In addition, the first jaw is formed from a relative to the support disks comparatively harder material. By using a harder material for the first jaw, material is prevented from breaking out of the jaw as a result of great force acting on the blow bar. However, a use of a harder material is only possible because the first jaw is not or not completely welded to the support disks. The first jaw can be fixed by the screw after a glow on the support disks so. Also, in that the fastening is effected by means of the screw connection, the stresses which are common during welding are avoided, as a result of which annealing of the first jaw after mounting on the support disks is unnecessary. In this respect, the first jaw can then have a very high hardness. The screw connection also makes it possible to replace any jaws destroyed by an outbreak of material without having to replace the entire rotor. A replacement of a jaw can then be done easily in the context of a change of blow bars, so that in addition to the cost of a new rotor costs for machine downtime can be avoided. Overall, the rotor can be at least two on a circumference of the rotor arranged at regular intervals blow bars with each blow bar recordings, or any number of blow bars.
Bevorzugt kann eine zweite Backe mit den Tragscheiben mittels einer Schraubverbindung lösbar verbunden sein, wobei die zweite Backe aus einem vergleichsweise härteren Material ausgebildet sein kann als die Tragscheiben. Die zweite Backe kann demnach nach Art der ersten Backe ausgebildet sein, so dass dann sämtliche Backen der Schlagleistenaufnahme mit den Tragscheiben verschraubt sind und aus vergleichsweise härteren Materialien bestehen. So können alle Arten von möglichen Beschädigungen an den Backen durch eine größere Härte der Backen zunächst vermieden und im Falle einer Beschädigung durch einen einfachen Austausch der betroffenen Backe leicht behoben werden.Preferably, a second jaw can be detachably connected to the support disks by means of a screw connection, wherein the second jaw can be formed from a comparatively harder material than the support disks. The second jaw can thus be designed in the manner of the first jaw, so that then all the jaws of the rasp bar mount are screwed to the support disks and consist of comparatively harder materials. Thus, all types of possible damage to the jaws by a greater hardness of the jaws initially avoided and easily repaired in case of damage by a simple replacement of the affected jaw.
Die Schlagleistenaufnahme kann, bezogen auf eine Drehrichtung des Rotors, eine vordere Backe und eine hintere Backe aufweisen. Die vordere Backe kann dabei mit einem Querschnitt kleiner ausgebildet sein als die hintere Backe. Für den Fall, dass nur eine der Backen der Schlagleistenaufnahme aus einem härteren Material besteht und eine Schraubverbindung mit den Tragscheiben aufweist, kann dies vorzugsweise die hintere Backe sein. Die vordere Backe könnte dann, wie aus dem Stand der Technik bekannt, mit den Tragscheiben verschweißt sein.The rasp bar recording can, based on a direction of rotation of the rotor, have a front jaw and a rear jaw. The front jaw can be made smaller with a cross section than the rear jaw. In the event that only one of the jaws of the rasp bar recording is made of a harder material and has a screw connection with the support disks, this may preferably be the rear jaw. The front jaw could then, as known from the prior art, be welded to the support disks.
In den Tragscheiben können jeweils in axialer Richtung der Rotorwelle verlaufende Ausnehmungen oder Nuten ausgebildet sein, in denen die Backen angeordnet sind. Dadurch wird es möglich, die Backen nicht nur an einem Umfang bzw. einer Außenseite der Tragscheiben zu befestigen, sondern in den Tragscheiben so zu integrieren, dass die Backen sich an den Tragscheiben abstützen können. Auf die Backen in radialer Richtung des Rotors wirkende Kräfte können so besonders einfach in die Tragscheiben eingeleitet werden.In the support disks each extending in the axial direction of the rotor shaft recesses or grooves may be formed, in which the jaws are arranged. This makes it possible to attach the jaws not only on a circumference or an outer side of the support disks, but to integrate in the support disks so that the jaws can be supported on the support disks. Forces acting on the jaws in the radial direction of the rotor can be introduced into the support disks in a particularly simple manner.
Eine Backe ist besonders einfach herstellbar, wenn sie als ein Profilelement ausgebildet ist, welches in axialer Richtung über eine gesamte Länge des Rotors verläuft. Die Backen können beispielsweise aber auch über die gesamte Länge des Rotors unterbrochen bzw. mehrteilig ausgebildet sein, so dass lediglich im Bereich einer Tragscheibe ein Backenabschnitt angeordnet ist. Ein Abstand zwischen Tragscheiben wird dann nicht von der Backe überbrückt. Insgesamt ist es dann möglich, die Backe an die jeweils auf die Backe wirkenden Kräfte und damit den jeweiligen Anwendungsfall anzupassen.A jaw is particularly easy to produce if it is designed as a profile element which extends in the axial direction over an entire length of the rotor. However, the jaws can, for example, also be interrupted over the entire length of the rotor or formed in several parts, so that a jaw section is arranged only in the region of a support disk. A distance between support disks is then not bridged by the jaw. Overall, it is then possible to adapt the jaw to the respective forces acting on the jaw and thus the respective application.
Vorteilhaft kann die Schlagleiste in der Schlagleistenaufnahme auswechselbar und an zumindest einer Backe formschlüssig befestigbar sein. Demzufolge kann zumindest eine Backe so ausgebildet sein, dass eine formschlüssige Befestigung einer Schlagleiste in der Schlagleistenaufnahme möglich ist. Optional kann die Schlagleiste auch mit beiden Backen formschlüssig befestigbar sein.Advantageously, the blow bar in the blow bar recording interchangeable and be positively attachable to at least one jaw. Consequently, at least one jaw can be designed such that a positive fastening of a blow bar in the blow bar receptacle is possible. Optionally, the blow bar can also be positively fastened with two jaws.
Die Schraubverbindung kann unmittelbar zwischen der Backe und der Tragscheibe ausgebildet sein, wobei eine Schraube in einer der Schlagleiste zugewandten Seitenfläche der Backe eingesetzt und mit der Tragscheibe verschraubt sein kann. Zwischen der Backe und der Tragscheibe ist dann kein weiteres Bauteil angeordnet, so dass eine auf die Backe wirkende Kraft unmittelbar auf die Tragscheibe übertragen werden kann. Je nach Bedarf kann eine Vielzahl von Schrauben zur Ausbildung der Schraubverbindung verwendet werden. Auch kann vorgesehen sein, die Schrauben ausschließlich in radialer Richtung der Rotorwelle in die Seitenfläche der Backe einzusetzen. Wesentlich bei der Ausbildung der Schraubverbindung ist, dass ein lastabtragender, axialer Querschnitt der Tragscheiben nicht durch die Schraubverbindung geschwächt wird. So wäre ein rückwärtiges Verschrauben der Backe mit der Tragscheibe über eine vergleichsweise lange Bohrung in der Tragscheibe für die Schraube für eine Festigkeit der Tragscheibe gegebenenfalls nachteilig. Dadurch, dass die Schraube lediglich in die Tragscheibe, ausgehend von der Seitenfläche der Backe, eingeschraubt ist, muss in der Tragscheibe lediglich eine kurze Gewindebohrung ausgebildet werden. Eine übermäßige Schwächung eines axialen Querschnitts der Tragscheibe kann so vermieden werden.The screw can be formed directly between the jaw and the support plate, wherein a screw can be used in a side facing the striking strip side surface of the jaw and bolted to the support plate. No further component is then arranged between the jaw and the support disk, so that a force acting on the jaw can be transmitted directly to the support disk. Depending on requirements, a variety of screws can be used to form the screw. It can also be provided to insert the screws exclusively in the radial direction of the rotor shaft in the side surface of the jaw. Essential in the formation of the screw is that a load-bearing, axial cross-section of the support disks is not weakened by the screw. Thus, a backward screwing of the jaw with the support disk over a comparatively long bore in the support disk for the screw for a strength of the support disk may be disadvantageous. The fact that the screw only in the support disc, starting from the Side surface of the jaw, is screwed, only a short threaded hole must be formed in the support plate. An excessive weakening of an axial cross section of the support disk can be avoided.
Vorteilhaft kann die Schraube quer durch die Backe verlaufen und aus einer Aufgabegut abgewandten Unterseite der Backe austreten und in der Tragscheibe eingeschraubt sein. Unter einer Aufgabegut abgewandten Unterseite wird eine einem Zerkleinerungsraum einer Zerkleinerungsmaschine abgewandte Unterseite verstanden. Vorzugsweise kann die Schraube so quer durch die Backe verlaufen, dass die Schraube in Richtung einer auf die Schraubverbindung wirkenden, radialen Kraft beim Betrieb des Rotors angeordnet ist. Eine Gewindebohrung innerhalb der Tragscheibe kann dabei auch in Richtung der Rotorwelle verlagert bzw. angeordnet werden, so dass eine Bruchgefahr der Tragscheibe infolge eines durch die Gewindebohrung geschwächten Querschnitts der Tragscheibe weiter vermindert wird.Advantageously, the screw can extend transversely through the jaw and exit from a feed material facing away from the bottom of the jaw and be screwed into the support disk. An underside facing away from a feed material is understood to mean a underside facing away from a comminution chamber of a comminution machine. Preferably, the screw can extend across the jaw so that the screw is arranged in the direction of acting on the screw, radial force during operation of the rotor. A threaded bore within the support disk can also be displaced or arranged in the direction of the rotor shaft, so that a risk of breakage of the support disk as a result of weakened by the threaded bore cross section of the support plate is further reduced.
Besonders vorteilhaft ist es, wenn die Backe mit der Tragscheibe mittels einer Verbindungssicherung formschlüssig, kraftschlüssig und/oder stoffschlüssig verbunden ist, wobei die Verbindungssicherung zur Aufnahme einer radialen Fliehkraft der Backe ausgebildet sein kann. So kann sichergestellt werden, dass selbst im Falle eines unbeabsichtigten Lösens oder Versagens der Schraubverbindung zwischen der Backe und der Tragscheibe die Backe noch gesichert an der Tragscheibe befestigt ist. Darüber hinaus kann durch die Ausbildung der Verbindungssicherung die auf die Backe wirkende Fliehkraft während des Betriebs des Rotors über die Verbindungssicherung in die Tragscheibe eingeleitet werden. Dabei ist es zunächst unerheblich in welcher Art die Verbindungssicherung ausgebildet ist, wobei die Verbindungssicherung stets eine einfache Montage bzw. ein Lösen der Backe ermöglichen sollte. Auch kann durch die Ausbildung der Verbindungssicherung die Schraubverbindung wesentlich entlastet werden, so dass die Schraubverbindung nur noch geringe Fliehkräfte aufnehmen muss.It when the jaw with the support plate by means of a connection fuse is positively, positively and / or materially connected, wherein the connection fuse may be formed for receiving a radial centrifugal force of the jaw is particularly advantageous. So it can be ensured that even in the case of unintentional loosening or failure of the screw connection between the jaw and the support plate, the jaw is still secured secured to the support plate. In addition, the force acting on the jaw centrifugal force can be initiated during operation of the rotor via the connection fuse in the support disc by the formation of the connection. It is initially irrelevant in what kind the connection fuse is formed, the connection fuse should always allow easy installation and release of the jaw. Also, by the formation of the connection securing the screw connection essential be relieved, so that the screw only has to absorb low centrifugal forces.
In einer Ausführungsform kann die Verbindungssicherung als zumindest eine axial jeweils in der Backe und in der Tragscheibe verlaufende Längsnut ausgebildet sein, in die eine Passfeder eingreift. Die Passfeder kann demnach die Längsnut der Backe sowie die Längsnut der Tragscheibe ausfüllen. Die jeweiligen Längsnuten können dann so angeordnet sein, dass kaum eine Schwächung eines Querschnitts der Tragscheibe erfolgt und eine auf die Backe wirkende Fliehkraft über die Passfeder in die Tragscheibe eingeleitet werden kann.In one embodiment, the connection assurance may be formed as at least one axially extending respectively in the jaw and in the support disk longitudinal groove, into which engages a feather key. The key can therefore fill the longitudinal groove of the jaw and the longitudinal groove of the support disc. The respective longitudinal grooves can then be arranged so that hardly a weakening of a cross section of the support disk takes place and acting on the jaw centrifugal force can be introduced via the feather key in the support disk.
In einer weiteren Ausführungsform kann die Verbindungssicherung als zumindest eine axial verlaufende Auskragung in der Tragscheibe ausgebildet sein, die einen übereinstimmend ausgebildeten Absatz in der Backe übergreift. Die Backe kann demnach den Absatz ausbilden, der unterhalb der Auskragung in der Tragscheibe eingesetzt sein kann. Die Auskragung kann somit die Backe in Richtung einer Fliehkraft formschlüssig fixieren. Optional ist es auch möglich, eine Mehrzahl von Auskragungen und Absätzen vorzusehen.In a further embodiment, the connection assurance may be formed as at least one axially extending projection in the support disk, which engages over a matching trained paragraph in the jaw. The jaw can therefore form the paragraph that can be used below the projection in the support disk. The projection can thus fix the jaw positively in the direction of centrifugal force. Optionally, it is also possible to provide a plurality of projections and paragraphs.
In einer weiteren Ausführungsform kann die Verbindungssicherung als zumindest eine Sicherungsschraubverbindung zwischen der Backe und der Tragscheibe ausgebildet sein, wobei eine Schraube in einer Aufnahmegut zugewandten Oberseite der Backe eingesetzt und mit der Tragscheibe verschraubt sein kann. Die Backe kann dann beispielsweise einen in der Tragscheibe ausgebildeten Absatz übergreifen, so dass eine Schraube in Richtung der Rotorwelle in die Tragscheibe eingeschraubt werden kann. Die Backe kann dann auch vergleichsweise breit ausgebildet sein, wodurch der Vorteil erzielt wird, dass ein abrasionsbedingter Verschleiß des Rotors im Bereich um die Schlagleiste vermindert werden kann.In a further embodiment, the connection security may be formed as at least one Sicherungsschraubverbindung between the jaw and the support plate, wherein a screw can be inserted in a receiving material facing the top of the jaw and bolted to the support plate. The jaw can then, for example, engage over a shoulder formed in the support disk so that a screw can be screwed into the support disk in the direction of the rotor shaft. The jaw can then be made comparatively wide, whereby the advantage is achieved that abrasionsbedingter wear of the rotor can be reduced in the area around the blow bar.
Auch kann die Verbindungssicherung als zumindest eine axial verlaufende Schweißnaht zwischen der Backe und der Tragscheibe ausgebildet sein, wobei die Schweißnaht im Wesentlichen ausschließlich an einer Aufnahmegut zugewandten Oberseite der Backe verlaufen kann. Insbesondere dadurch, dass die Schweißnaht dann ausschließlich an der Oberseite der Backe bzw. Tragscheibe verläuft, kann die Schweißnaht leicht entfernt und wieder angebracht werden. Trotz der dann stoffschlüssigen Verbindung wird dennoch eine leichte und beliebig wiederholbare Montage und Demontage der Backe an den Tragscheiben ermöglicht. Wesentlich dabei ist, dass an schwer zugänglichen Verbindungskanten von Backe und Tragscheibe keine Schweißnähte angebracht werden. Auch wird durch die Schweißnaht an der Oberseite der Backe keine Spannung innerhalb des Rotors erzeugt, da die Backe dann alleine über diese einzelne Schweißnaht mit jeweils den Tragscheiben stoffschlüssig verbunden ist und über die Schraubverbindung eine begrenzte Positionskorrektur und damit ein Abbau von eventuellen Spannungen erfolgen kann.Also, the connection assurance may be formed as at least one axially extending weld between the jaw and the support disk, wherein the weld may extend substantially exclusively on a receiving side facing the top of the jaw. In particular, the fact that the weld then runs exclusively on the top of the jaw or support plate, the weld can be easily removed and replaced. Despite the then cohesive connection a light and arbitrary repeatable assembly and disassembly of the jaw on the support disks is still possible. It is essential that no weld seams are attached to hard-to-reach joint edges of jaw and support plate. Also, no stress is generated within the rotor by the weld at the top of the jaw, since the jaw is then materially connected alone via this single weld with each of the support disks and a limited position correction and thus a reduction of possible voltages can be done via the screw.
Die zuvor beschriebenen Verbindungssicherungen können auch nach Bedarf miteinander kombiniert werden.The connection fuses described above can also be combined as needed.
An den Tragscheiben kann, bezogen auf eine Drehrichtung des Rotors, vor der vorderen Backe eine Schutzkappe des Rotors mittels einer Schraubverbindung lösbar befestigt sein. Da sich insbesondere vor einer Schlagleiste bei einem Betrieb des Rotors Aufgabegut ansammeln kann, kann ein starker abrasiver Verschleiß des Rotors in diesem Bereich erfolgen. Dies kann wirkungsvoll dadurch verhindert werden, dass in diesem Bereich die Schutzkappe angeordnet wird. Durch die lösbare Befestigung der Schutzkappe mittels einer Schraubverbindung wird diese dann leicht auswechselbar. Auch hier kann vorgesehen sein, die Schutzkappe aus einem vergleichsweise härteren Material auszubilden als die Tragscheiben. Die Schutzkappe kann beispielsweise unmittelbar mit den Tragscheiben an dafür vorgesehenen Halterungen verschraubt sein. Weiter ist ein Rotor an seinen axialen Seitenflächen einem Verschleiß dadurch ausgesetzt, dass sich hier bei einem Betrieb des Rotors ebenfalls Aufgabegut ansammeln und abrasiv auf diesen Bereich des Rotors einwirken kann. Dies kann wirkungsvoll vermieden werden, wenn an den, bezogen auf eine axiale Richtung der Rotorwelle, äußeren Tragscheiben jeweils Seitenschutzplatten des Rotors angeordnet sind, wobei die Seitenschutzplatten dann mittels einer Schraubverbindung an jeweils Seitenflächen der äußeren Tragscheiben lösbar befestigt sein können. Die Seitenschutzplatten für äußere Tragscheiben können einteilig oder auch mehrteilig ausgebildet sein. Vorzugsweise kann auch hier vorgesehen sein, die Seitenschutzplatten aus einem vergleichsweise härteren Material als die Tragscheiben auszubilden. Somit wird es möglich, einerseits einen Verschleiß der Seitenschutzplatten herabzusetzen und diese bei Bedarf auszuwechseln, ohne den Rotor vollständig austauschen zu müssen. Die Schraubverbindungen können so ausgestaltet sein, dass sie ebenfalls vor einem Verschleiß bzw. einer abrasiven Einwirkung von Aufgabegut geschützt sind.On the support disks may, based on a direction of rotation of the rotor, in front of the front jaw, a protective cap of the rotor be releasably secured by means of a screw connection. Since feed material can collect in particular before a blow bar during operation of the rotor, a strong abrasive wear of the rotor can take place in this area. This can be effectively prevented by placing the protective cap in this area. The detachable attachment of the protective cap by means of a screw connection, this is then easily replaceable. Again, it may be provided to form the protective cap of a comparatively harder material than the support disks. The protective cap can for example be screwed directly to the support disks on holders provided for this purpose. Furthermore, a rotor is exposed to wear on its axial side surfaces in that, in the case of operation of the rotor, feed material also accumulates here and can act on this region of the rotor in an abrasive manner. This can be effectively avoided if at the, relative to an axial direction of the rotor shaft, outer support disks each side protection plates of the rotor are arranged, the side protection plates can then be releasably secured by means of a screw on each side surfaces of the outer support disks. The side protection plates for outer support disks can be formed in one piece or also in several parts. Preferably, it may also be provided here that the side protection plates are made of a comparatively harder material than the carrier disks. Thus, it becomes possible, on the one hand to reduce wear of the side protection plates and replace them if necessary, without having to replace the rotor completely. The screw connections can be designed so that they are also protected against wear or abrasive action of feed material.
Vorteilhaft können die Seitenschutzplatten die äußeren Tragscheiben in radialer Richtung überragen, wobei an den Seitenflächen der äußeren Tragscheiben oder Backen der Verschiebesicherungen für die Schlagleisten mittels Schraubverbindungen angeordnet sein können, und wobei dann die Seitenschutzplatten die Verschiebesicherungen in axialer Richtung überragen können. Dadurch, dass dann die Seitenschutzplatten die äußeren Tragscheiben in radialer Richtung überragen, kann ein Schutz der äußeren Kanten der Tragscheiben gewährleistet werden. Auch die Verschiebesicherungen können durch die Seitenschutzplatten vor einem Verschleiß geschützt werden. Die Verschiebesicherungen können beispielsweise stabförmige Elemente sein, die mittels Schrauben an den äußeren Seitenflächen der Tragscheiben und/oder Backen lösbar befestigt sind. Dabei können die Verschiebesicherungen formschlüssig in die jeweiligen Schlagleisten derart eingreifen, dass eine axiale und eine radiale Verschiebung der Schlagleisten verhindert wird. Beispielsweise können die Schlagleisten an ihren Stirnseiten Nuten aufweisen, in die die Verschiebesicherungen jeweils eingreifen können.Advantageously, the side protection plates may project beyond the outer support disks in the radial direction, it being possible to arrange on the side surfaces of the outer support disks or jaws of the sliding securing devices for the blow bars by means of screw connections, and in that case the side protection plates can project beyond the displacement safeguards in the axial direction. The fact that then the side protection plates protrude beyond the outer support disks in the radial direction, a protection of the outer edges of the support disks can be ensured. The anti-slip devices can also be protected against wear by the side protection plates. The displacement safeguards may be, for example, rod-shaped elements which are releasably secured by means of screws to the outer side surfaces of the support disks and / or jaws. In this case, the displacement fuses can positively engage in the respective blow bars such that an axial and a radial displacement of the blow bars is prevented. For example the blow bars can have grooves on their front sides into which the sliding securing devices can engage in each case.
Wenn die Schraube eine Dehnungsschraube ist, kann eine auf die Schraubverbindung einwirkende Kraft vorteilhaft von der Dehnungsschraube aufgenommen werden, ohne dass es zu einer unerwünschten Bewegung der verschraubten Bauelemente kommt. Durch eine Vorspannung der Dehnungsschraube wird auch ein unerwünschtes Lösen derselben infolge des Betriebs des Rotors vermieden. Darüber hinaus ist der Rotor dann auch bei unterschiedlichsten Temperaturen einsetzbar, ohne dass es zu einer Schwächung der Schraubverbindung kommt.If the screw is an expansion screw, a force acting on the screw connection can be advantageously absorbed by the expansion screw, without causing unwanted movement of the screwed components. By a bias of the expansion screw and an undesirable loosening of the same due to the operation of the rotor is avoided. In addition, the rotor can then be used even at very different temperatures, without weakening the screw connection.
Die Backe ist besonders verschleißfest, wenn diese aus Stahl oder Gusseisen mit einer Härte von zumindest 200 Brinell (HB), bevorzugt zumindest 400 Brinell (HB), besonders bevorzugt zumindest 500 Brinell (HB), ausgebildet ist. Wenn der Rotor Schutzkappen, Seitenschutzplatten oder Verschiebesicherungen aufweist, können diese ebenfalls aus diesem Material ausgebildet sein. Dadurch, dass die Backe mittels der Schraubverbindung unabhängig von der Rotorwelle mit den Tragscheiben an den Tragscheiben montierbar ist, kann die Rotorwelle mit den Tragscheiben ohne die Backe geglüht werden, so dass Backen mit einem vergleichsweise härteren Material nach dem Glühen an den Tragscheiben montiert werden können.The jaw is particularly wear-resistant if it is made of steel or cast iron having a hardness of at least 200 Brinell (HB), preferably at least 400 Brinell (HB), more preferably at least 500 Brinell (HB). If the rotor has protective caps, side shields or anti-slip devices, these may also be made of this material. Characterized in that the jaw by means of the screw connection is independent of the rotor shaft with the support disks on the support disks mountable, the rotor shaft can be annealed with the support disks without the jaw, so that jaws can be mounted with a comparatively harder material after annealing to the support disks ,
Die erfindungsgemäße Zerkleinerungsmaschine umfasst einen erfindungsgemäßen Rotor, wobei die Zerkleinerungsmaschine Schlagleisten umfasst, wobei die Schlagleiste aus einem Guss-Werkstoff, einem feinkörnigen Baustahl oder einer Einlage aus Keramik besteht, wobei die Schlagleiste eine Härte von 150 bis 600 Brinell (HB), vorzugsweise 350 bis 550 Brinell (HB) aufweist. Die Schlagleisten können so besonders verschleißfest ausgebildet werden.The crushing machine according to the invention comprises a rotor according to the invention, wherein the crushing machine comprises beater bars, wherein the beater bar consists of a cast material, a fine-grained structural steel or a ceramic insert, wherein the beater bar has a hardness of 150 to 600 Brinell (HB), preferably 350 to 550 Brinell (HB). The blow bars can be designed so wear-resistant.
Bei dem erfindungsgemäßen Verfahren zur Instandsetzung eines Rotors für einen Prallbrecher, zur Zerkleinerung von Baustoffen, Gestein oder dergleichen, ist der Rotor aus einer Rotorwelle mit in axialer Richtung der Rotorwelle angeordneten Tragscheiben, und an den Tragscheiben angeordneten Befestigungsvorrichtungen für Schlagleisten gebildet, wobei mittels der Befestigungsvorrichtung eine Schlagleiste lösbar an den Tragscheiben befestigbar ist, wobei die Befestigungsvorrichtung von zumindest zwei Backen ausgebildet ist, wobei die Backen mit den Tragscheiben fest verbunden sind, wobei die Backen derart voneinander beabstandet an den Tragscheiben angeordnet sind, dass die Backen eine Schlagleistenaufnahme ausbilden und die Schlagleiste zwischenliegend den Backen anordbar ist, wobei zumindest eine Backe durch spanende Bearbeitung oder nichtmechanisches Abtrennen, insbesondere Brennschneiden, von den Tragscheiben entfernt wird, wobei in einem Bereich der entfernten Backe Gewindebohrungen in den Tragscheiben ausgebildet werden, wobei eine erste Backe mit den Tragscheiben mittels einer Schraubverbindung lösbar verbunden wird, wobei die erste Backe aus einem vergleichsweise härteren Material ausgebildet ist als die Tragscheiben.In the inventive method for repairing a rotor for an impact crusher, for crushing of building materials, rock or Like, the rotor is formed of a rotor shaft arranged in the axial direction of the rotor shaft support disks, and arranged on the support disks fastening devices for blow bars, wherein by means of the fastening device a beater bar is detachably fastened to the support disks, wherein the fastening device is formed by at least two jaws, wherein the jaws are fixedly connected to the support disks, wherein the jaws are arranged spaced apart from each other on the support disks, that the jaws form a rasp bar receptacle and the blow bar between the jaws can be arranged, wherein at least one jaw by machining or non-mechanical cutting, in particular flame cutting is removed from the support disks, wherein in a region of the removed jaw threaded holes are formed in the support disks, wherein a first jaw is releasably connected to the support disks by means of a screw, wherein the first jaw is formed of a comparatively harder material than the support disks.
Bei der ersten Backe handelt es sich folglich um eine Ersatzbacke, die die ursprünglich an den Tragscheiben angeschweißte Backe ersetzt. Die erste Backe wird mittels der ausgebildeten Schraubverbindung auswechselbar. Insgesamt kann so der Rotor im Falle eines irreparablen Materialausbruchs an der angeschweißten Backe durch das erfindungsgemäße Verfahren zur Instandsetzung weiter verwendet werden. Weiter ist es auch möglich, den Rotor, je nach Ausbildung der ersten Backe hinsichtlich einer formschlüssigen Verbindung mit der Schlagleiste, an eine beliebigen Art einer Schlagleiste anzupassen. Unterschiedliche, auf dem Markt befindliche Befestigungssysteme von Schlagleisten können so bedarfsgemäß berücksichtigt werden. Zu den weiteren Vorteilen, das erfindungsgemäße Verfahren betreffend, wird auf die Vorteilsbeschreibungen des erfindungsgemäßen Rotors verwiesen. Weitere Ausführungsformen des Verfahrens ergeben sich aus den auf dem Vorrichtungsanspruch 1 rückbezogenen Unteransprüchen.The first jaw is therefore a replacement jaw that replaces the jaw originally welded to the support disks. The first jaw is exchangeable by means of the trained screw connection. Overall, the rotor can be used in the event of an irreparable material eruption on the welded jaw by the inventive method for repair on. Further, it is also possible to adapt the rotor, depending on the design of the first jaw in terms of a positive connection with the blow bar, to any type of blow bar. Different fastening systems of blow bars on the market can thus be considered as needed. With regard to the further advantages concerning the method according to the invention, reference is made to the description of advantages of the rotor according to the invention. Further embodiments of the method will become apparent from the dependent claims on the device claim 1.
Nachfolgend werden bevorzugte Ausführungsformen der Erfindung unter Bezugnahme auf die beigefügten Zeichnungen näher erläutert.Hereinafter, preferred embodiments of the invention will be explained in more detail with reference to the accompanying drawings.
Es zeigen:
- Fig. 1
- eine perspektivische Ansicht eines Rotors mit Schlagleisten in einer ersten Ausführungsform;
- Fig. 2
- eine Vorderansicht des Rotors aus
Fig. 1 ; - Fig. 3
- eine Seitenansicht des Rotors aus
Fig. 1 ; - Fig. 4
- eine perspektivische Ansicht des Rotors aus
Fig. 1 ohne Schlagleisten, Schutzkappen und Seitenschutzplatten; - Fig. 5
- eine perspektivische Ansicht einer Schlagleiste;
- Fig. 6
- eine perspektivische Ansicht einer Schutzkappe;
- Fig. 7
- eine perspektivische Ansicht einer Seitenschutzplatte;
- Fig. 8
- eine Seitenansicht des Rotors aus
Fig. 1 ohne Schlagleisten, Schutzkappen und Seitenschutzplatten; - Fig. 9
- eine Seitenansicht eines Rotors in einer zweiten Ausführungsform;
- Fig. 10
- eine Seitenansicht eines Rotors in einer dritten Ausführungsform;
- Fig. 11
- eine Seitenansicht eines Rotors in einer vierten Ausführungsform.
- Fig. 1
- a perspective view of a rotor with blow bars in a first embodiment;
- Fig. 2
- a front view of the rotor
Fig. 1 ; - Fig. 3
- a side view of the rotor
Fig. 1 ; - Fig. 4
- a perspective view of the rotor
Fig. 1 without blow bars, protective caps and side protection plates; - Fig. 5
- a perspective view of a blow bar;
- Fig. 6
- a perspective view of a protective cap;
- Fig. 7
- a perspective view of a side protection plate;
- Fig. 8
- a side view of the rotor
Fig. 1 without blow bars, protective caps and side protection plates; - Fig. 9
- a side view of a rotor in a second embodiment;
- Fig. 10
- a side view of a rotor in a third embodiment;
- Fig. 11
- a side view of a rotor in a fourth embodiment.
Eine Zusammenschau der
Wie aus
Die
Die
Die
Die
Die
Bei der in der
Claims (20)
dadurch gekennzeichnet,
dass zumindest eine erste Backe (15, 16, 63, 64, 71, 72, 83, 84) mit den Tragscheiben mittels einer Schraubverbindung (19, 65, 73, 82) lösbar verbunden ist, wobei die erste Backe aus einem vergleichsweise härteren Material ausgebildet ist als die Tragscheiben.Rotor (10, 59, 70, 81) for an impact crusher, for the crushing of building materials, rock or the like, wherein the rotor consists of a rotor shaft (12, 60) arranged in the axial direction of the rotor shaft carrying discs (13, 14, 61, 74 , 85), and on the support disks arranged fastening devices for blow bars is formed, wherein by means of the fastening device a blow bar (11) releasably attachable to the support disks, wherein the fastening device of at least two jaws (15, 16, 63, 64, 71, 72 , 83, 84) is formed, wherein the jaws are fixedly connected to the support disks, wherein the jaws are arranged spaced apart from each other on the support disks such that the jaws form a rasp bar receptacle (17) and the beater bar can be arranged between the jaws,
characterized,
in that at least one first jaw (15, 16, 63, 64, 71, 72, 83, 84) is detachably connected to the support disks by means of a screw connection (19, 65, 73, 82), the first jaw being made of a comparatively harder material is formed as the support disks.
dadurch gekennzeichnet,
dass eine zweite Backe (15, 16, 63, 64, 71, 72, 83, 84) mit den Tragscheiben (13, 14, 61, 74, 85) mittels einer Schraubverbindung (19, 65, 73, 82) lösbar verbunden ist, wobei die zweite Backe aus einem vergleichsweise härteren Material ausgebildet ist als die Tragscheiben.Rotor according to claim 1,
characterized,
in that a second jaw (15, 16, 63, 64, 71, 72, 83, 84) is detachably connected to the support disks (13, 14, 61, 74, 85) by means of a screw connection (19, 65, 73, 82) , wherein the second jaw is formed of a comparatively harder material than the support disks.
dadurch gekennzeichnet,
dass die Schlagleistenaufnahme (17), bezogen auf eine Drehrichtung des Rotors (10, 59, 70, 81), eine vordere Backe (15, 63, 71, 83) und eine hintere Backe (16, 64, 72, 84) aufweist.Rotor according to claim 1 or 2,
characterized,
in that the blow bar receptacle (17) has a front jaw (15, 63, 71, 83) and a rear jaw (16, 64, 72, 84) relative to a direction of rotation of the rotor (10, 59, 70, 81).
dadurch gekennzeichnet,
dass in den Tragscheiben(13, 14, 61, 74, 85) jeweils in axialer Richtung der Rotorwelle (12, 60) verlaufende Ausnehmungen (18, 62, 80) oder Nuten ausgebildet sind, in den die Backen (15, 16, 63, 64, 71, 72, 83, 84) angeordnet sind.Rotor according to one of the preceding claims,
characterized,
that in the support disks (13, 14, 61, 74, 85) respectively in the axial direction of the rotor shaft (12, 60) extending recesses (18, 62, 80) or grooves are formed, in which the jaws (15, 16, 63 , 64, 71, 72, 83, 84) are arranged.
dadurch gekennzeichnet,
dass die Backe (15, 16, 63, 64, 71, 72, 83, 84) als ein Profilelement ausgebildet ist, welches in axialer Richtung über eine gesamte Länge des Rotors (10, 59, 70, 81) verläuft.Rotor according to one of the preceding claims,
characterized,
in that the jaw (15, 16, 63, 64, 71, 72, 83, 84) is formed as a profiled element which runs in the axial direction over an entire length of the rotor (10, 59, 70, 81).
dadurch gekennzeichnet,
dass die Schlagleiste (11) in der Schlagleistenaufnahme (17) auswechselbar und an zumindest einer Backe (15, 16, 63, 64, 71, 72, 83, 84) formschlüssig befestigbar ist.Rotor according to one of the preceding claims,
characterized,
that the blow bar (11) in the blow bar receptacle (17) interchangeable and on at least one jaw (15, 16, 63, 64, 71, 72, 83, 84) can be fastened in a form-fitting manner.
dadurch gekennzeichnet,
dass die Schraubverbindung (19, 65, 73, 82) unmittelbar zwischen der Backe (15, 16, 63, 64, 71, 72, 83, 84) und der Tragscheibe (13, 14, 61, 74, 85) ausgebildet ist, wobei eine Schraube (42) in einer der Schlagleiste (11) zugewandten Seitenfläche (39, 40) der Backe eingesetzt und mit der Tragscheibe verschraubt ist.Rotor according to one of the preceding claims,
characterized,
in that the screw connection (19, 65, 73, 82) is formed directly between the jaw (15, 16, 63, 64, 71, 72, 83, 84) and the support disk (13, 14, 61, 74, 85), wherein a screw (42) in one of the blow bar (11) facing side surface (39, 40) of the jaw is inserted and screwed to the support disk.
dadurch gekennzeichnet,
dass die Schraube (42) quer durch die Backe (15, 16, 63, 64, 71, 72, 83, 84) verläuft und aus einer Aufgabegut abgewandten Unterseite (36, 37) der Backe austritt und in der Tragscheibe (13, 14, 61, 74, 85) eingeschraubt ist.Rotor according to claim 7,
characterized,
in that the screw (42) extends transversely through the jaw (15, 16, 63, 64, 71, 72, 83, 84) and exits bottom side (36, 37) of the jaw facing away from a feed material and in the carrier disc (13, 14 , 61, 74, 85) is screwed.
dadurch gekennzeichnet,
dass die Backe (15, 16, 63, 64, 71, 72, 83, 84) mit der Tragscheibe (13, 14, 61, 74, 85) mittels einer Verbindungssicherung (66, 75, 86) formschlüssig, kraftschlüssig und/oder stoffschlüssig verbunden ist, wobei die Verbindungssicherung zur Aufnahme einer radialen Fliehkraft ausgebildet ist.Rotor according to one of the preceding claims,
characterized,
that the jaw (15, 16, 63, 64, 71, 72, 83, 84) with the support disc (13, 14, 61, 74, 85) by means of a connection assurance (66, 75, 86) positive, non-positive and / or is integrally connected, wherein the connection assurance is designed to receive a radial centrifugal force.
dadurch gekennzeichnet,
dass die Verbindungssicherung (66) als zumindest eine axial verlaufende Längsnut (68, 69) jeweils in der Backe (63, 64) und in der Tragscheibe (61) ausgebildet ist, in die eine Passfeder (67) eingreift.Rotor according to claim 9,
characterized,
in that the connection safety device (66) is designed as at least one axially extending longitudinal groove (68, 69) in the jaw (63, 64) and in the support disk (61) into which a feather key (67) engages.
dadurch gekennzeichnet,
dass die Verbindungssicherung (75) als zumindest eine axial verlaufende Auskragung (78, 79) in der Tragscheibe (74) ausgebildet ist, die einen übereinstimmend ausgebildeten Absatz (76, 77) in der Backe (71, 72) übergreift.Rotor according to claim 9 or 10,
characterized,
in that the connection safeguard (75) is designed as at least one axially extending projection (78, 79) in the support disk (74), which overlaps a correspondingly formed shoulder (76, 77) in the jaw (71, 72).
dadurch gekennzeichnet,
dass die Verbindungssicherung (86) als zumindest eine Sicherungsschraubverbindung (87) zwischen der Backe (83, 84) und der Tragscheibe (85) ausgebildet ist, wobei eine Schraube (93) in eine Aufgabegut zugewandten Oberseite der Backe eingesetzt und mit der Tragscheibe verschraubt ist.Rotor according to one of claims 9 to 11,
characterized,
in that the connection safeguard (86) is designed as at least one securing screw connection (87) between the jaw (83, 84) and the support disk (85), wherein a screw (93) is inserted in an upper side of the jaw facing the material to be supplied and screwed to the support disk ,
dadurch gekennzeichnet,
dass die Verbindungssicherung als zumindest eine axial verlaufende Schweißnaht (46, 47) zwischen der Backe (15, 16) und der Tragscheibe (13, 14) ausgebildet ist, wobei die Schweißnaht ausschließlich an einer Aufgabegut zugewandten Oberseite (44, 45) der Backe verläuft.Rotor according to one of claims 9 to 12,
characterized,
in that the connection securing device is designed as at least one axially extending weld seam (46, 47) between the jaw (15, 16) and the support disk (13, 14), wherein the weld runs exclusively on an upper side (44, 45) of the jaw facing a feed material ,
dadurch gekennzeichnet,
dass an den Tragscheiben (13, 14, 61, 74, 85), bezogen auf eine Drehrichtung des Rotors (10, 59, 70, 81), vor der Backe (15, 16, 63, 64, 71, 72, 83, 84) eine Schutzkappe des Rotors mittels einer Schraubverbindung (23) lösbar befestigt ist.Rotor according to one of the preceding claims,
characterized,
in that on the support disks (13, 14, 61, 74, 85), relative to a direction of rotation of the rotor (10, 59, 70, 81), in front of the jaw (15, 16, 63, 64, 71, 72, 83, 84) a protective cap of the rotor by means of a screw (23) is releasably attached.
dadurch gekennzeichnet,
dass an den, bezogen auf eine axiale Richtung der Rotorwelle (12, 60), äußeren Tragscheiben (61, 74, 85) jeweils Seitenschutzplatten (25) des Rotors (10, 59, 70, 81) angeordnet sind, wobei die Seitenschutzplatten mittels einer Schraubverbindung (26) an jeweils Seitenflächen (24) der äußeren Tragscheiben lösbar befestigt sind.Rotor according to one of the preceding claims,
characterized,
in that , relative to an axial direction of the rotor shaft (12, 60), outer support discs (61, 74, 85) each side protection plates (25) of the rotor (10, 59, 70, 81) are arranged, wherein the side protection plates by means of a Screw connection (26) on each side surfaces (24) of the outer support disks are releasably secured.
dadurch gekennzeichnet,
dass die Seitenschutzplatten (25) die äußeren Tragscheiben (61, 74, 85) in radialer Richtung überragen, wobei an den Seitenflächen (24) der äußeren Tragscheiben oder Backen (15, 16, 63, 64, 71, 72, 83, 84) Verschiebesicherungen (27) für die Schlagleisten (11) mittels Schraubverbindungen (29) angeordnet sind, wobei die Seitenschutzplatten die Verschiebesicherungen in axialer Richtung überragen.Rotor according to claim 15,
characterized,
in that the side protection plates (25) project beyond the outer support disks (61, 74, 85) in the radial direction, wherein on the side surfaces (24) of the outer support disks or jaws (15, 16, 63, 64, 71, 72, 83, 84) Sliding fuses (27) for the blow bars (11) by means of screw (29) are arranged, wherein the side protection plates protrude beyond the sliding securing in the axial direction.
dadurch gekennzeichnet,
dass die Schraube (42, 93) eine Dehnungsschraube ist.Rotor according to one of the preceding claims,
characterized,
that the screw (42, 93) is an expansion screw.
dadurch gekennzeichnet,
dass die Backe (15, 16, 63, 64, 71, 72, 83, 84) aus Stahl oder Gusseisen mit einer Härte von zumindest 200 Brinell (HB), bevorzugt zumindest 400 Brinell (HB), besonders bevorzugt zumindest 500 Brinell (HB), ausgebildet ist.Rotor according to one of the preceding claims,
characterized,
in that the jaw (15, 16, 63, 64, 71, 72, 83, 84) is made of steel or cast iron having a hardness of at least 200 Brinell (HB), preferably at least 400 Brinell (HB), more preferably at least 500 Brinell (HB ), is trained.
dadurch gekennzeichnet,
dass die Zerkleinerungsmaschine Schlagleisten (11) umfasst, wobei die Schlagleiste aus einem Guss-Werkstoff, einem feinkörnigen Baustahl oder einer Einlage aus Keramik besteht, wobei die Schlagleiste eine Härte von 150 bis 600 Brinell (HB), vorzugsweise 350 bis 550 Brinell (HB) aufweist.Crushing machine with a rotor (10, 59, 70, 81) according to one of the preceding claims,
characterized,
that the crushing machine comprises blow bars (11), wherein the blow bar consists of a cast material, a fine-grained structural steel or a ceramic insert, wherein the blow bar has a hardness of 150 to 600 Brinell (HB), preferably 350 to 550 Brinell (HB).
dadurch gekennzeichnet,
dass zumindest eine Backe (15, 16, 63, 64, 71, 72, 83, 84) durch spanende Bearbeitung oder nichtmechanisches Abtrennen von den Tragscheiben entfernt wird, wobei in einem Bereich der entfernten Backe Gewindebohrungen (43) in den Tragscheiben ausgebildet werden, wobei eine erste Backe mit den Tragscheiben mittels einer Schraubverbindung (19, 65, 73, 82) lösbar verbunden wird, wobei die erste Backe aus einem vergleichsweise härteren Material ausgebildet ist als die Tragscheiben.Method for repairing a rotor (10, 59, 70, 81) for an impact crusher, for comminuting building materials, rock or the like, wherein the rotor comprises a rotor shaft (12, 60) with carrying disks (13, 14) arranged in the axial direction of the rotor shaft , 61, 74, 85), and arranged on the support disks mounting devices for blow bars is formed, wherein by means of the fastening device a blow bar (11) releasably secured to the support disks, wherein the fastening device of at least two jaws (15, 16, 63, 64 , 71, 72, 83, 84) is formed, wherein the jaws are fixedly connected to the support disks, wherein the jaws are arranged spaced apart from each other on the support disks, that the jaws form a rasp bar receptacle (17) and the blow bar between the jaws arranged anordbar is
characterized,
that at least one jaw (15, 16, 63, 64, 71, 72, 83, 84) is removed from the support disks by machining or non-mechanical separation, wherein threaded holes (43) are formed in the support disks in a region of the removed jaw, wherein a first jaw is releasably connected to the support disks by means of a screw connection (19, 65, 73, 82), wherein the first jaw is formed of a comparatively harder material than the support disks.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014225479.5A DE102014225479B4 (en) | 2014-12-10 | 2014-12-10 | ROTOR AND METHOD FOR REPAIRING A ROTOR |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3031526A2 true EP3031526A2 (en) | 2016-06-15 |
EP3031526A3 EP3031526A3 (en) | 2016-07-06 |
EP3031526B1 EP3031526B1 (en) | 2017-06-28 |
Family
ID=54780098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15196660.3A Not-in-force EP3031526B1 (en) | 2014-12-10 | 2015-11-27 | Rotor and method for repairing a rotor |
Country Status (2)
Country | Link |
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EP (1) | EP3031526B1 (en) |
DE (1) | DE102014225479B4 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017129932A1 (en) | 2017-12-14 | 2019-06-19 | Hamm Ag | Tillage roller |
CN113751132A (en) * | 2021-08-27 | 2021-12-07 | 江苏正昌粮机股份有限公司 | Efficient hammer mill |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR431241A (en) * | 1911-02-03 | 1911-11-06 | Walther Feld | Process for the recovery of ammonia from gases, vapors and liquids by sulfur dioxide |
DE1013499B (en) * | 1954-02-11 | 1957-08-08 | Soest Ferrum Appbau G M B H | Blow bar for the rotors of impact mills or the like. |
DE2147920A1 (en) * | 1971-09-25 | 1973-03-29 | Hazemag Hartzerkleinerung | PROTECTIVE DEVICE FOR IMPACT MILL ROTORS |
GB2128499A (en) * | 1982-10-14 | 1984-05-02 | Dresser Europe Sa | Impact breakers |
DE3525442C2 (en) * | 1985-07-17 | 1994-10-20 | Hermann Schroedl | Blow bar for an impact crusher rotor |
DE3905492A1 (en) * | 1989-02-23 | 1990-08-30 | Hoffmann Albert Kg | PROTECTIVE SHIELD FOR WASHER BREAKER ROTORS |
DE4037036C1 (en) * | 1990-11-22 | 1992-06-25 | Kleemann + Reiner Gmbh Maschinen- Und Anlagenbau, 7320 Goeppingen, De | Impact stone crusher with trough-shaped housing - has aresting wedge displaceable orthogonally in guide groove wall |
-
2014
- 2014-12-10 DE DE102014225479.5A patent/DE102014225479B4/en not_active Expired - Fee Related
-
2015
- 2015-11-27 EP EP15196660.3A patent/EP3031526B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
None |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017129932A1 (en) | 2017-12-14 | 2019-06-19 | Hamm Ag | Tillage roller |
CN114657845A (en) * | 2017-12-14 | 2022-06-24 | 哈姆股份公司 | Ground processing roller |
CN113751132A (en) * | 2021-08-27 | 2021-12-07 | 江苏正昌粮机股份有限公司 | Efficient hammer mill |
CN113751132B (en) * | 2021-08-27 | 2023-02-21 | 江苏正昌粮机股份有限公司 | Efficient hammer mill |
Also Published As
Publication number | Publication date |
---|---|
DE102014225479B4 (en) | 2017-04-13 |
EP3031526A3 (en) | 2016-07-06 |
DE102014225479A1 (en) | 2016-06-16 |
EP3031526B1 (en) | 2017-06-28 |
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