JP2000509646A - Crushing machine - Google Patents

Abstract

(57) Abstract: The crusher includes a casing 1 and at least one element 6, 7, 8 rotatably disposed in the casing for crushing material. The casing includes at least one wall portion 11 extending along the rotating element. This wall part is at least partially formed by a device 27 movably arranged with respect to the rest of the casing 1. The device is movable between a first position in which the device is in a normal operating position with respect to the rotating element and a second position in which the device is remote from the rotating element.

Description

The field of the invention and the prior art The invention comprises a casing and at least one element rotatably arranged in said casing for crushing material, said casing comprising It relates to a disintegrating machine of the type comprising at least one wall section extending along a rotatable element. Such a machine is described in Swedish Patent No. C446 247 (SE-C446 247) by the applicant of the present invention (8303168─2). In this prior art machine, the casing is designed to be rigid and includes, on both sides of the rotating element, stationary wall portions extending along said rotating element. Such a fixed wall part is provided with a counteredge arrangement, which includes a cutting member movable relative to the fixed wall part, for adjusting the position with respect to the rotating element. It is. In such a crusher, an excessive amount of material or a material that is difficult to crush is supplied to the crusher, resulting in occasional overload conditions. The drive of the rotating element suitably includes an overload function for reversing the direction of rotation during overload. This alleviates the problems that arise under overload conditions, but in the light of the fact that, for example, the material can be hard, such that there is a risk of damaging the rotating element, a stuck material or It is difficult to have the crusher deliberate from materials that it is not desirable to crush. In order for the prior art machine to avoid itself from the material under overload conditions, the material is continuously pumped through the crusher during crushing by repeatedly turning the direction of rotation and operating the crusher. You need to do that. However, the probability of material passing through the crusher is permanently constant, which can severely damage crusher components. SUMMARY OF THE INVENTION It is an object of the present invention to provide a machine designed to adapt to current operating conditions. In particular, it is desirable to be able to adapt the machine under overload to make it easier for material to pass through, or to make it easier for the machine to escape from the materials intervening therein. This object is achieved, according to the invention, by a wall part which is formed at least in part by a device movably arranged with respect to the rest of the casing, which device furthermore comprises The device is movable between a first position located in a normal operating position and a second position remote from the rotating element. Materials that are difficult to crush only when the movable device moves to some extent from the rotating element can be easily passed through the crusher. However, in accordance with a preferred embodiment of the present invention, the movable device is such that in its second position, cumbersome or difficult-to-crush materials can be discharged from the crusher through openings provided by the movable device. The opening is made in the casing. According to a preferred embodiment of the invention, the movable device is provided with a counter-edge device, which is adapted to cooperate with a rotating element for breaking up the material. In this way, the counter-edge device follows the movable device in moving between the two positions and can move toward or away from the rotating element. According to another embodiment of the present invention, a positioning device for enabling movement of a movable device away from its first position when a force applied to the movable device exceeds a predetermined value. Is preferably elastic. In this way, unacceptable forces are not exerted on the mobile device, so that a counter-edge device can be provided thereon. According to a particularly preferred embodiment of the present invention, the movable device comprises at least two movable members. Preferably, the two members are engaged with each other by an engagement member when at least in the first position. If the movable device is designed to create a substantial opening laterally with respect to the axis of rotation of the rotating element when it is at a position remote from the rotating element, the crusher may be replaced by a second It is possible to design such that the movable element can be removed from the crusher through the opening formed by the device movable in position. Other features and advantages of the machine according to the invention will become apparent from the claims and the following description. BRIEF DESCRIPTION OF THE DRAWINGS A more detailed description of embodiments of the present invention, with reference to the accompanying drawings, follows. In the figures, FIG. 1 is a view of the machine according to the invention from above, FIG. 2 is similar to FIG. 1, but the two upper first rotary crushing elements are removed and the second Drawing in which the rotary fracturing element is evident (the latter element is not shown in FIG. 1), FIG. 3 in a cross section transverse to the axis of rotation of the rotatably arranged element FIG. 4 is a view showing a part housed in a device which is very similar to FIG. 3 but is movable in a slightly different position, FIG. 4 is a view very similar to FIG. 4 but showing the device movable in the open position, FIG. 6 is an enlarged view showing details of FIG. 4, FIG. 7 is a view shown to the right of FIG. FIG. 8 is a top view of the rotating element in a state in which the rotating element is cooperating with a member accommodated in FIG. 9 is a view similar to FIG. 3 of the slightly modified embodiment, FIG. 10 is a view showing another embodiment similar to FIGS. 3 and 9, and FIG. FIG. 11 is a view showing still another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment shown in FIGS . 1 to 8 The apparatus according to the invention is particularly suitable for most variable types of coarse or unsorted material, but is also used for other crushing operations. sell. The crusher generally includes a casing designated by 1. The casing includes an opening 2 at the top (FIG. 3) for supplying the material to be crushed. The casing includes an opening 3 at the bottom for discharging the crushed material. In the remainder, the casing 1 comprises a gable wall and side walls, indicated collectively by 4 and 5, respectively. In this example, three rotating elements 6, 7, 8 are rotatably arranged in the casing. It is pointed out that the machine also includes a frame for supporting this rotating element. The frame and the casing 1 are appropriately integrated. For example, the frame may consist of a frame upright in the conventional manner by means of beams 9 as shown in FIG. 3, the wall portions attached to these beams, ie the gable wall portions 10 and generally 11 in FIG. It covers the sidewall portion shown. FIG. 3 shows only one side wall. Thus, the above-mentioned frame and wall portion form the casing 1. The three rotating elements 6, 7, 8 are considered to have the properties of a roll or shaft, are rotatably supported at their ends by the gable wall 4, and are driven to rotate by a suitable motor. The motors for the rotating elements 6, 7 are shown in FIG. 1 and are indicated at 12 and 13, respectively. The rotating elements 6, 7, 8 may be manually operated for crushing, for example, in a manner characterized by the inventive aspects described in EP81539. However, it is pointed out that this is not absolutely necessary for the present invention. In this way, only the upper two rotating elements 6, 7 can be operated, for example, in accordance with the principles of the aforementioned European patent, while the remaining rotating elements 8 can be of a different configuration, or all the rotating elements It is possible to design it to work according to other crushing principles. In other words, this means that the rotating elements 6 to 8 need not necessarily have a processing member in the form of a screw or the like, but may have other processing members such as, for example, a beating member, a disk or the like. Means that Hereinafter, the rotating elements 6 and 8 will be described as having a roll property. The upper two rolls 6, 7 preferably form a crushing zone 14 between them, which can be done by rotating said rolls and moving their surroundings downward in the processing zone 14. preferable. The direction of rotation of the roll is therefore indicated in FIG. 3 by arrows 15 and 16, respectively. Another roll 8 is arranged in this example in the area below the crushing zone 14, in particular the roll 8 forms a common crushing zone 17, 18 with each of said two upper rolls 6, 7. are doing. The roll 8 rotates in both directions indicated by arrows 19 and 20. When using the function described in EP 81539, the upper two rolls 6,7 are designed to move the material intervening in the crushing zone 14 in generally opposite directions along the axis of rotation of the rolls 6,7. Have been. For this purpose, the rolls 6, 7 are threaded in a central core. These threads 21, 22 are in the form of blades and are inclined in opposite directions to provide a good crushing function. The direction of rotation of the rolls 6, 7 and the direction of the threads are selected such that the threads 21, 22 move the material intervening in the crushing zone in opposite directions. In this example, the rolls 6, 7 are driven in opposite rotational directions, while the threads 21, 22 of the roll have the same thread direction. However, other variations can be provided. For example, the rolls can be driven in the same rotational direction, but the directions of the threads 21, 22 are still the same. Also, the lower roll 8 is designed in this example to operate according to the principle described in EP 81 539. Thus, the roll 8 also provides the core and the threads 22, 23 disposed thereon. The thread here is constituted by two types with significantly different pitches. When the roll 8 rotates in one of the directions indicated by the arrows 19, 20, the first of all the threads indicated by 24 attempts to move the material along the roll 8 in one direction, depending on the direction of rotation. I do. The same is true for the thread indicated at 23, although the extremely large pitch would result in a relatively small axial force component on the material during crushing. As the roll 8 rotates in the direction of the arrow 20, the threads of the rolls 7 and 8 force the material intervening in the crushing zone 18 to rotate in the aforementioned direction of rotation (arrows 20 and 16) in the opposite direction along the roll. As it crushes, it cooperates to crush in zone 18 between the rolls 8 themselves and the roll indicated by 7. Reversing the direction of rotation of the roll 8 according to the arrow 19 provides a corresponding function in the crushing zone 17. It is noted that short thread portions 25, 26, which are in the form of rolls and are oriented in the opposite direction to the threads 21, 22, respectively, are arranged at both ends of the rolls 6, 7. These thread portions 25, 26 have the purpose of preventing material from stagnating at both ends of the rolls 6, 7 due to the different feed directions in which the threads 21, 22 act on the material being crushed. One design of the wall portion 11 shown in FIG. 3 will be described with reference to FIG. However, a similar structure may be present on the other side of the crusher such that the crusher has a generally symmetric design with respect to a vertical mid-plane P1 extending through the crusher parallel to the axis of rotation of the rolls. be pointed out. The wall part 11 seen in FIG. 3 is formed at least in part by a device generally designated 27 and is movably arranged with respect to the rest of the casing 1. The device 27 is shown in FIG. 3 and in a first position where the device 27 is in the normal operating position with respect to the rolls 7 and 8, and in FIG. And a second position being moved from the second position. As described above, the movable device 27 has a wall-like property in that the movable device 27 acts to suppress the side of the space interposed inside the casing 1. Crushing takes place in said space and rolls 6-8 are arranged. A counter edge device, indicated generally at 28, is provided on the movable device 27 and is adapted to cooperate with the roll 8 to break up the material. As can be seen from a comparison with FIG. 5, the counter edge device 28 is adapted to follow the movement of said device 27 to the position shown in FIG. 5, and moves away from the roll 8 during such a movement. FIG. 4 shows that the movable device 27 has been slightly adjusted to the position shown in FIG. 3 and the counter edge device 28 has moved away from around the roll 8. The perimeter of this roll is formed by the outermost parts of the thread formers 23,24. Movable device 27 is connected to a device generally designated at 29 to position the device in the first position shown in FIG. The positioning device 29 is preferably resilient so that if the force applied to the movable device 27 exceeds a predetermined value, it can leave the device 27 from the first position. In other words, this means that when the roll 8 and possibly the roll 7 are driven so that the material is pressed (arrows 20 and 16) towards the area of the counter-edge device 28, a certain value is obtained. The excess force acts on the counter-edge device 28 to cause the counter-edge device 28 and thus the entire device 27 to break apart, for example to the position shown in FIG. Indicates that no force is applied. In the event of excessive force, the device can even open as shown in FIG. Preferably, the positioning device 29 includes at least one power acting member. This may, for example, be of variable length and have the nature of a member acting between a stationary point 30 with respect to the casing 1 and a point 31 of the movable device 27. An advantageous example of a power acting member is a piston-cylinder mechanism which can be elastically actuated in the manner described above. The positioning device 29 is adapted to move the movable device 27 to a position where the device 27 is away from the rolls 7, 8 relative to its first position. The movable device 27 comprises in this example two movable members 32,33. The two members 32, 33 are mutually engaged by engaging members 34, 35 at least when the members are in the first position shown in FIG. The counter edge device 28 is provided on one of the members 32, 33. In this example, the counter edge device 28 is provided on the member indicated by 33. The positioning device 29 acts directly on one of the members 32, 33, while the remaining members are acted on indirectly via the engaging members 34, 35. In this example, the positioning device 29 acts on the member 33 on which the counter edge device 28 is also located. In this example, this member 33 forms the lower part of the movable device 27 when viewed as a whole. At least one, suitably both, of the members 32, 33 of the movable device 27 are pivotable about axes 36, 37, respectively. The pivot 36 of the upper member 32 is located at a level above the counter edge device 28. The engaging member (see also FIG. 5) includes at least one protrusion 34 on one of the members and a recess 35 on the other of the members capable of receiving the protrusion. The protrusions / recesses 34, 35 include a mating engagement between the portions. FIG. 6 shows, somewhat more clearly, the manner in which the counter edge device 28 is constructed, adjustable and wearable. It can be seen that the cutting member 38 is fixed to the base 39 with a screw. The base 39 is fixed to the frame of the member 33 by bolts. The recess 35 is formed by two small pieces 41 and 42 fixed to the frame of the member 33 with screws. The small piece 41 abuts the shoulder of the frame of the member 33 and forms a support for the base 39. As shown in FIGS. 3 to 6, a spacer can be inserted between the base 39 and the small piece 41 to adjust the protrusion of the cutting member 38 from the member 33. As can be seen from FIG. 6, a bolt 40 is movably received laterally in the slot 43 to enable such an adjustment. The tensioning means attached to the bolt 40, here in the form of a nut 44, need of course be released before inserting or removing the spacer. One of the members 32 has a pivot 36 located significantly higher than the pivot 37 of the other member 33. As the members 32, 33 pivot to the second position shown in FIG. 5, they pivot about the axis in opposite directions, thereby disengaging the engagement members 34, 35. The positioning device 29 in this example remains engaged with the member 33 carrying the counter edge device 28, while the second member 32 has to pivot upward by other means to the position shown in FIG. . In this position, the counter edge device 28 is conveniently accessible for changing cutting members and performing other necessary utilities. The member 32 can be associated with a positioning device for moving the member 32 in particular to the open position shown in FIG. For example, it relates to a power acting device which connects the shaft 36 securely to the member 32 and forms the positioning device for pivoting said member 32. In this regard, a pivotal movement is applied to the member 33 via a shaft 37, whereby the shaft 37 is firmly connected to the member 33, and the shaft 37 needs to be activated via a suitable power-operated member. . 7 and 8 show that on the side facing the roll 7, the member 32 is provided with a member 45 which forms another crushing zone between the roll 7 and itself. The other zone is located at the location indicated by 46 in FIG. It is pointed out that said member 45 is not shown in FIG. In the present example, the member 45 is formed by a protruding rib positioned so that an edge portion protrudes from the member 32 relatively close to the periphery of the roll 7. In the present example, the rib 45 extends in an arc shape corresponding to the periphery of the roll 7. The rib 45 is substantially perpendicular to the rotation axis of the roll 7, but may be inclined. An important feature of the members, ie, ribs 45, is that they cooperate with the threads of the roll 7 for crushing as they move through the members, ie, the ribs. In all of the foregoing embodiments, the movable device 27 includes a wall forming portion located at a level above the counter edge device 28. When using the aforementioned machine, the device 27 is adjusted to operate in a conventional manner to the position shown in FIG. This position is defined by a stop, not shown, which limits the pivoting of the member 33 in the direction towards the roll 8. As crushing commences, the device 27 may move backward elastically when the force exerted on the device 27 exceeds a certain predetermined level. However, the locating device 29 is resilient so that if the effect of the force falls below the level, the device 27 and thus the counter edge device 28 will return to the normal operating position shown in FIG. If it is necessary to remove large undesired objects such as scraps from the machine, the part 32 is pivoted by the positioning device 29 to the open position shown in FIG. 5, and the part 32 is further pivoted to the open position. The roll is then driven, preferably by inversion, so that the object or scrap can be thrown out of the machine. In the open position shown in FIG. 5, the operating and maintenance personnel can conveniently approach the interior of the machine, of course especially the counter-edge device 28. Alternative Embodiments Shown in FIGS. 9 to 11 The alternative embodiment shown in FIG. 9 corresponds entirely to the embodiment described above, except that the countage device 28 is connected to the member 32 instead of the member 33. are doing. In other words, the positioning device 29 still acts on said part 33, while the counter edge device 28 is provided in the second part. For the rest, the engagement members 34, 35 are inverted so that the projections 34 are provided on the member 33 and the recesses 35 are provided on the member 32. Also, the engagement members 34, 35 between the two members 32, 33 are parallel to or parallel to the pivots 36, 37 of the members when the members are in the first position shown in FIG. It is necessary to state that it is located substantially on or near the plane P2 that coincides with. For the rest, the corresponding situation is the same as that shown in FIGS. A movable wall similar to the device 27 is formed in FIG. 10 by a single member 32 on which the counter edge device 28 is mounted. The member 32 includes a lower wall portion 37 located below the counter edge device 28 and near the roll 8. The positioning device 29 acts between the frame and the member 32 of the machine. Thus, a positioning device 29 in the form of a piston-cylinder mechanism or the like moves the member 32 and thus the counter-edge device 28 between its operating position and the open position corresponding to the position taken by the member 32 in FIG. Act to operate. Finally, FIG. 11 generally corresponds to the embodiment corresponding to FIGS. 1 to 8, but as far as the member 33 which provides the counter edge device 28, said member 33 has a 360.degree. Indicates that it can pivot freely. In particular, here the member 33 is adapted to be pivoted by an axis 37 by the action of a suitable power acting device. It is also evident from FIG. 11 that the member 32 also includes the aforementioned members or ribs 45 to form a crushing zone between the member and the roll 7. Possible Modifications Of course, the invention is not limited to the embodiments described above. In this way, many modifications are possible within the basic concept of the invention. For example, it is pointed out that the movable device 27 need not be formed of one or more pivotable members. Alternatively, one or more of the members can be designed to be entirely straight, arcuate, or movable in a direction of movement that is appropriate for the situation. In the case of a movable device formed by two members 32, 33, one of the members may be pivotable, for example, while the other is translatable or capable of other forms of movement. . Still other modifications are accomplished by those skilled in the art.

[Procedure of Amendment] Article 184-8, Paragraph 1 of the Patent Act [Submission date] July 31, 1998 (July 31, 1998) [Correction contents]                                 The scope of the claims   1. A casing (1) and rotatable on said casing to crush the material Crusher of the kind comprising at least one element (6, 7, 8) arranged in a At least one said casing (1) extending along said rotating element A wall portion (11) of said casing with respect to the rest of said casing. Movably arranged in a normal operating position with respect to said rotating elements (6, 7, 8). Movable between a first position and a second position remote from the rotating element. Said movable device being at least partially formed by a device (27) (27) The counter edge device (28) is provided, and the counter edge device (28) is provided. An apparatus is adapted to cooperate with said rotating element (8) to break up material, Counter edge device follows the device (27) in movement between the two positions And approaching or moving away from said rotating element. Such a crusher, wherein the movable device comprises at least two movable parts. Material (32, 33), said counter edge device (28) being attached to one of said members A crusher, which is provided.   2. A device for positioning the movable device (27) in a first position; Crusher according to claim 1, characterized in that it is connected to a device (29). .   3. The positioning device (29) is provided with a force acting on the movable device. To allow said mobile device to move away from the first position above a certain value 3. The crusher according to claim 2, wherein the crusher is elastic.   4. The positioning device (29) includes at least one power acting member. The crushing machine according to claim 2 or 3, characterized in that:   5. The movable device (27) is moved by the positioning device (29). 2. The electronic device according to claim 2, wherein the movable member is movable to a position (2). A crusher according to any one of the preceding claims.   6. At least in the first position, by the engagement members (34, 35); 2. The method according to claim 1, wherein the two members engage with each other. 6. The crusher according to any one of items 1 to 5.   7. The positioning device (29) is adapted to actuate one of the members directly. Acting on a member while the other of the members is indirectly connected via the engaging members (34, 35). Claims 2 and 3 characterized in that they are arranged so as to operate in a dynamic manner. 7. The crusher according to item 6.   8. At least two members (32, 33) in said movable device Are pivotable about individual pivots (36, 37). 8. The crusher according to any one of items 1 to 7.   9. A first rotatable element comprising at least two rotatably arranged elements; Part of the movable device (27) in the position of Claims 1 to 8 characterized in that they are located relatively close to each other. The crusher according to any one of the above. 10. The engagement member has at least one protrusion (34) on one of the members. ) And at least one indentation (35) capable of receiving said projection is provided on the other of said members. The crusher according to claim 6, wherein the crusher is included. 11. The engagement member (34, 35) between the two members (32, 33) When the member is in the first position, it is flat against the pivots (36, 37) of the member. In the row, the location is approximately at or near the plane (P2) that coincides with them. The crusher according to claim 6, wherein the crusher is disposed. 12. The two first rotating elements (6, 7) have a crushing zone between them ( 14) cooperating with one another to form 14) The crusher according to any one of items 11 to 11. 13. The second rotating element (8) has one or more further crushing zones (17). , 18) to form the counter edge device (28) and / or Claim 1 and claim 2, characterized in that they cooperate with a first rotating element (6, 7). Item 13. A crusher according to Item 12. 14． Said movable device (27) has one of the rotating elements (6, 7) On the side facing away, a crush zone (46) is formed between itself and the rotating element. A member (45) comprising: The crusher according to any one of items 13 to 13. 15. So that said movable device (27) cooperates with said rotating element (8) Including a wall forming portion located at a level above the separated counter edge device (28) The crusher according to claim 1, wherein: 16. Said movable device (27) or at least a part thereof (32) Pivotable about an axis (36), the axis is used to break up material. The upper edge of the counter-edge device (28) adapted to cooperate with the rotating element (8) The crusher according to claim 1, wherein the crusher is located at a bell. 17． A casing (1) and rotatable on said casing to crush the material A crusher of the type comprising at least one element (6, 7, 8) arranged The casing (1) has at least one wall extending along the rotating element Part (11), said wall part moving relative to the rest of said casing Posable and in a normal operating position with respect to said rotating element (6, 7, 8). Device movable between a first position and a second position remote from the rotating element. The movable device (27) at least partially formed by the 27) is provided with a counter edge device (28), and the counter edge device is provided. Arrangement for cooperating with said rotating element (8) to crush the material, The interface device follows the device (27) in moving between the two positions. , Approaching or moving away from said rotating element (8) The movable device (27) is provided with the counter edge device (28). And is formed by a single member (32) that is pivotable about an axis (36). In the crusher as described above, the axis (36) of the pivotable member (32) is in front. Being located at a level above the counter edge device (28). Crushing machine. 18. The pivotable member (32) has one of the rotating elements (6, 7) On the side facing away, a crush zone is formed between itself and the rotating element. 18. A member according to claim 17, wherein a member (45) is provided. Crusher.

────────────────────────────────────────────────── ─── Continuation of front page    (81) Designated countries EP (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, L U, MC, NL, PT, SE), OA (BF, BJ, CF) , CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG), AP (GH, KE, LS, MW, S D, SZ, UG), EA (AM, AZ, BY, KG, KZ , MD, RU, TJ, TM), AL, AM, AT, AT , AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, CZ, DE, DE, DK, D K, EE, ES, FI, FI, GB, GE, HU, IL , IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, M K, MN, MW, MX, NO, NZ, PL, PT, RO , RU, SD, SE, SG, SI, SK, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN

Claims (1)

[Claims] 1. Casing (1) and rotatable on said casing to crush the material A crusher of the type comprising at least one element (6, 7, 8) arranged at The casing (1) has at least one wall extending along the rotating element A crusher comprising a portion (11), wherein said wall portion comprises the remainder of said casing; At least part by means of a device (27) movably arranged with respect to the part Wherein said device (27) comprises said rotating element (6, 7, 8). A) a first position, which is in a normal operating position with respect to Crusher operable between movable second positions.   2. The movable device (27) is provided with a counter edge device (28). And the rotating element (8) so that the counter edge device breaks up the material. Are adapted to cooperate, said counter edge device being located between said two positions. Follow the device (27) in movement and approach the rotating element (8) Claim 1 characterized in that it is adapted to move away from it. The crushing machine according to 1.   3. The movable device (27) positions the device in its first position. Claim 1 characterized in that it is connected to a positioning device (29). Or a crusher according to item 2.   4. Said positioning device (29) acting on said movable device Moving the movable device away from the first position when the force increases above a predetermined value Crushing according to claim 3, characterized in that it is elastic so as to be able to Machine.   5. The positioning device (29) includes at least one force acting member; The crusher according to claim 3 or 4, characterized in that:   6. The movable device (27) is moved by the positioning device (29). 2. The apparatus according to claim 3, wherein the apparatus is movable to a position (2). A crusher according to any one of the preceding claims.   7. The movable device comprises at least two movable members (32, 33). ) The method according to any one of claims 1 to 6, further comprising: Crusher.   8. The two members (32, 33) are at least in their first position At this time, they are mutually engaged by the engaging members (34, 35). Crusher according to claim 7, wherein   9. A counter edge device (28) is provided on one of the members. The crusher according to claim 7 or 8, wherein: 10. The positioning device (29) is adapted to directly activate one of the members. And the other member is indirectly actuated via the engaging members (34, 35). Claims 3 and 8 characterized by being arranged so that Crusher as described. 11. The movable device (27) comprises a counter edge device (28). Characterized by being formed by a single member (32) provided 3. The crusher according to claim 2, wherein 12. One of the members (32, 33) in the movable device or 12. A device according to claim 7, wherein both are pivotable. Crusher. 13. At least two rotatably arranged elements (6, 7); A movable device (27) in a first position is relatively close to the periphery of the rotating element. Claims 1 to 12 characterized by having a position located at an angle. The crusher according to any one of the above. 14． The engagement member may include at least one protrusion (34) on one member. At least one indentation (35) in the other member, said projection being receivable. The crusher according to claim 8, comprising: 15. The engagement member (34, 35) between the two members (32, 33) is When the two members are in the first position, they are parallel to the pivots (36, 37) of said members. And generally located on or near a plane (P2) that coincides with them. The crusher according to claim 8, wherein the crushing machine is used. 16. The two first rotating elements (6, 7) cooperate with each other and The crushing zone (14) is formed, wherein the crushing zone (14) is formed. The crusher according to any one of the above. 17． The second rotating element (8) is a counter edge device (28) and / or Cooperating with one of the first rotating elements (6, 7) one or more further crushing zones Claims 2 and 16 characterized in that the pins (17, 18) are formed. The crushing machine according to 1. 18. The movable device (27) has one of the rotating elements (6, 7) On the facing side, form a crushing zone (46) between itself and said rotating element 2. A member according to claim 1, wherein a member (45) is provided. The crusher according to any one of items 7 to 7. 19. So that said movable device (27) cooperates with said rotating element (8) Wall forming part located at a level above the isolated counter edge device (28) The crushing machine according to claim 1, comprising: 20. Said movable device (27) or at least a part thereof (32) It is pivotable about an axis (36), which is pivotable to break the material. At a level above the counter edge device (28) adapted to cooperate with the element (8) The crusher according to claim 1, wherein the crusher is located at a position where the crusher is located.