Abstract
Disclosed is a deflection distributor refitting kit for a roller crusher. According to the disclosure the deflection distributor refitting kit comprises a deflection distributing shaft, thrust rods each having first and second ends and mounts for attachment of the deflection distributing shaft at a frame of the roller crusher, wherein a first end of each of the thrust rods is attached to the deflection distributing shaft via a lever, and wherein a second end of each of the thrust rods is arranged to be attached to a movable bearing housing of the roller crusher. Also disclosed is a method for mounting the deflection distributor refitting kit, as well as a roller crusher comprising a deflection distributor.
Claims
1. A deflection distributor refitting kit for a roller crusher including a first roll and a second roll, comprising: a deflection distributing shaft; thrust rods each having first and second ends; and mounts for attachment of the deflection distributing shaft at a first and a second side of a frame of the roller crusher, wherein a first end of each of the thrust rods is attached to the deflection distributing shaft via a lever, and wherein a second end of each of the thrust rods is arranged to be attached to a movable bearing housing of the roller crusher.
2. The deflection distributor refitting kit according to claim 1, wherein the deflection distributing shaft is rotatably suspended in the mounts.
3. The deflection distributor refitting kit according to claim 2, wherein rotational bearings are arranged between the deflection distributing shaft and the mounts.
4. The deflection distributor refitting kit according to claim 1, further comprising at least one replacement roll for replacing one of the first or second rolls of the roller crusher, which replacement roll has a flange attached to each end thereof, and which flange extends in a radial direction of the replacement roll and has a height above an outer surface of the replacement roll.
5. The deflection distributor refitting kit according to claim 4, wherein the flange comprises a feeding structure on the inside of the flange.
6. The deflection distributor refitting kit according to claim 1, further comprising replacement bearings for one or both of the first and second rolls of the roller crusher.
7. The deflection distributor refitting kit according to claim 1, wherein the deflection distributing shaft is rigid.
8. The deflection distributor refitting kit according to claim 1, wherein the deflection distributing shaft is hollow and has a wall thickness of 10 to 200 mm.
9. The deflection distributor refitting kit according to claim 1, wherein at least one accumulator is arranged to be connected to a hydraulic system of the roller crusher.
10. The deflection distributor refitting kit according to claim 1, wherein the roller crusher includes end supports arranged to be mounted at a frame of the roller crusher at the first and second sides thereof.
11. The deflection distributor refitting kit according to claim 10, wherein the thrust rods are arranged to pass by or through the end supports.
12. The deflection distributor refitting kit according to claim 10, wherein the end supports are arranged to be coupled to at least one hydraulic cylinder of a hydraulic system of the roller crusher.
13. A method for mounting a deflection distributor refitting kit to a roller crusher, the roller crusher comprising a frame; a first crusher roll and a second crusher roll arranged axially in parallel with each other, the first crusher roll being supported in first bearing housings arranged in the frame, the second crusher roll being supported in second bearing housings which are configured to be movable; and a hydraulic system configured to adjust the position of the second crusher roll and a crushing pressure between the two crusher rolls, the method comprising: providing a deflection distributor including a deflection distributing shaft, mounts for attaching the deflection distributing shaft at the frame of the roller crusher and thrust rods each having first and second ends; attaching the second ends of the thrust rods to the movable bearing housings respectively; and attaching the deflection distributing shaft to the frame by means of the mounts.
14. The method for mounting a deflection distributor refitting kit according to claim 13, wherein the deflection distributor refitting kit is mounted in parallel to the hydraulic system of the roller crusher.
15. The method according to claim 14, wherein the hydraulic system of the roller crusher comprises two hydraulic cylinders for each movable bearing on the respective sides of the second crusher roll, wherein each of the thrust rods is arranged between the two hydraulic cylinders on the respective sides of the second crusher roll.
16. The method according to claim 15, wherein each of the thrust rods is arranged midway between the two hydraulic cylinders on the respective sides of the second crusher roll.
17. A roller crusher, the roller crusher comprising; a frame; first and second crusher rolls arranged axially in parallel with each other, the first crusher roll being supported in first bearing housings which are arranged in the frame, the second crusher roll being supported in second bearing housings which are configured to be movable; a hydraulic system configured to adjust the position of the second crusher roll and a crushing pressure between the two crusher rolls; and a deflection distributor, wherein the deflection distributor comprises a deflection distributing shaft, mounts for attaching the deflection distributing shaft at the frame of the roller crusher and thrust rods each having first and second ends, wherein the first end of each of the thrust rods is attached to the deflection distributing shaft via a lever, and wherein the second end of each of the thrust rods is attached to a movable bearing housing of the second crusher roll.
18. The roller crusher according to claim 17, wherein the deflection distributor is connected to the second roll to adjust the position of the second crusher roll in a direction parallel to the hydraulic system.
19. The roller crusher according to claim 17, wherein the hydraulic system of the roller crusher comprises two hydraulic cylinders for each movable bearing on the respective side of the second crusher roll, wherein each of the thrust rods is arranged between the two hydraulic cylinders on the respective side of the second crusher roll.
20. The roller crusher according to claim 17, wherein one roll of the first and second crusher rolls has a flange attached to each end thereof, and which flange extends in a radial direction of the roll and has a height above an outer surface of the roll.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0075] The invention will be described in more detail and with reference to the appended drawings in which:
[0076] FIG. 1 shows a perspective view of a roller crusher according to prior art.
[0077] FIG. 2 shows a perspective view of a deflection distributor refitting kit according to one embodiment of the first aspect of the disclosed invention.
[0078] FIG. 3 shows a perspective view of a roller crusher with a deflection distributor according to an embodiment of the third aspect of the disclosed invention.
[0079] FIG. 4 shows a schematic bottom view of an arrangement with the deflection distributor and the first and second crusher rolls.
[0080] FIG. 5 shows a schematic view of deflection distribution changes during uneven feed characteristics along the length of the crushing gap within the roller crusher with a deflection distributor according to one embodiment of the first aspect of the disclosed invention.
[0081] FIG. 6 shows a deflection distributor refitting kit according to another embodiment of the first aspect of the disclosed invention.
[0082] FIG. 7 shows a deflection distributor refitting kit according to a further embodiment of the first aspect of the disclosed invention.
[0083] FIG. 8 shows a perspective view of a roller crusher with a deflection distributor refitting kit according to a further embodiment of the first aspect of the disclosed invention.
[0084] FIG. 9 shows a side view of a roller crusher with a deflection distributor refitting kit according to an embodiment of the first aspect of the disclosed invention.
DESCRIPTION OF EMBODIMENTS
[0085] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplifying embodiments of the invention are shown. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and to fully convey the scope of the invention to the skilled addressee. Like reference characters refer to like elements throughout.
[0086] FIG. 1 shows a roller crusher 1 according to the prior art. Such roller crusher 1 comprises a frame 2 in which a first, fixed crusher roll 3 is arranged in bearings 5, 5′. The bearing housings 35, 35′ of these bearings 5, 5′ are fixedly attached to the frame 2 and are thus immoveable. A second crusher roll 4 is arranged in the frame 2 in bearings 6, 6′ which are arranged in the frame 2 in a slidable moveable manner. The bearings 6, 6′ can move in the frame 2 in a direction perpendicular to a longitudinal direction of the first and second crusher rolls 3, 4. Typically a guiding structure 7, 7′ is arranged in the frame on first and second sides 50, 50′ along upper and lower longitudinal frame elements 12, 12′, 13, 13′ of the roller crusher 1. The bearings 6, 6′ are arranged in moveable bearing housings 8, 8′ which can slide along the guiding structure 7, 7′. Further, a number of hydraulic cylinders 9, 9′ are arranged between the moveable bearing housing 8, 8′ and first and second end supports 11, 11′ which are arranged near or at a first end 51 of the roller crusher 1. These end supports 11, 11′ attach the upper and lower longitudinal frame elements 12, 12′, 13, 13′ and also act as support for the forces occurring at the hydraulic cylinders 9, 9′ as they are adjusting the gap width and reacting to forces occurring at the crusher rolls due to material fed to the roller crusher 1. Such roller crushers work according to the earlier disclosed crushing technique called interparticle crushing, and the gap between the crushing rolls 3, 4 is adjusted by the interaction of feed load and the hydraulic system effecting the position of the second crusher roll 4. As stated above, such a prior art roller crusher suffers from delay in adjusting the position of the second crusher roll 4. In case of uneven load along the length of the crushing gap or in case of tramp material entering into the crushing gap, especially when entering into the gap off-center, the second crushing roll 4 may skew and the hydraulic system 10, 10′ is too slow to adjust the position of the movable bearing housings keeping a constant feed pressure, and the movable bearing housings may jam in the guides 7, 7′ and, in case of non-crushable material, the surface of the crushing rolls may be damaged by the non-crushable material, and the whole frame 2 of the roller crusher 1 may become oblique.
[0087] FIG. 2 shows a deflection distributor refitting kit 100 according to the present invention. Firstly, the components of the deflection distributor refitting kit 100 will be described and thereafter, the advantages of the deflection distributor refitting kit 100 will be described in detail. The deflection distributor refitting kit 100 comprises a deflection distributing shaft 20 and levers 25, 25′ attached at respective ends of the deflection distributing shaft 20. Further, arranged at each end of the deflection distributing shaft 20 is a mount 24, 24′ which is used to mount the deflection distributing shaft 20 of the deflection distributor refitting kit 100 to a frame 2 of a roller crusher 1. The deflection distributing shaft comprises rotational bearings, preferably spherical bearings, in each end thereof allowing the deflection distributing shaft 20 to rotate in relation to the mounts. The levers 25, 25′ each comprise a shank 26, 26′ which are attached with a first end thereof to the deflection distributing shaft 20 and which extends in a radial or tangential direction of the deflection distributing shaft 20. Attached to a second end of each of the levers 26, 26′ is a first end 27, 27′ of a thrust rod 21, 21′. Second ends 28, 28′ of the thrust rods are intended to be attached to the moveable bearing housings 8, 8′ of the roller crusher 1. Each of the levers 25, 25′ is attached to a first end 27, 27′ of a respective thrust rod 21, 21′ such that a longitudinal axis of the lever 25, 25′ is arranged substantially perpendicular to a longitudinal axis of the thrust rod 21, 21′. Further, the longitudinal axis of the lever 25, 25′ passes through the central axis of the deflection distributing shaft 20 and a pivotal point of the lever 25, 25′ and the thrust rod 21, 21′.
[0088] The deflection distributor refitting kit 100 according to the present invention is arrangeable at previously known roller crushers 1 as shown in FIG. 1. By using the deflection distributor refitting kit 100, problems in previously known roller crushers 1, more specifically skewing problems occurring in roller crusher 1 can be avoided. The gap width between the crusher rolls 3, 4 will vary during use depending on the characteristics and amount of material fed to the roller crusher, and the gap width may also vary along the length of the crusher rolls 3, 4 depending on how the material is fed to the roller crusher 1 and on the characteristics thereof. For example, if more material is located towards a first side 50 of the roller crusher 1, there is a risk that the gap will become wider towards the first end 50 than towards a second side 50′ of the roller crusher 1. The moveable second crusher roll 4 will become askew. This has several disadvantages. For example, the skewing creates forces which the roller crusher 1 is not suitable to handle. The frame 2 is mainly intended to handle forces directed in the longitudinal direction of the roller crusher 1. Further, forces in oblique directions may cause jamming in the guiding structure 7, 7′ and the moveable bearing housings 8, 8′ will get stuck, thus becoming unable to react and move as required by the material feed situation. In order to avoid skewing, it is required that both ends of the second crusher roll 4, 4′ travel the same distance in the same amount of time in response to an event involving uneven feed, i.e. feed situations where the load at one end of the second crusher roll 4 is greater than the load at a second end of the second crusher roll 4. The hydraulic system 10, 10′ comprising hydraulic cylinders 9, 9′ is not able to respond adequately fast to these skewing situations. This type of situations would require that large amounts of hydraulic liquid is displaced within fractions of a second. And not only need a hydraulic system to displace this amount of hydraulic liquid in such short time, it must first also measure the correct amount of liquid to displace. The deflection distributor of the present invention on the other hand, has no problems with this. It is able to immediately transfer an unbalanced load event from one moveable bearing housing 8, 8′ located on one side of the roller crusher 1 to the moveable bearing housing 8, 8′ on the other side of the roller crusher 1. In response to a displacement of one of the moveable bearing housings 8, 8′, the corresponding thrust rod 21, 21′ attached to that moveable bearing housing 8, 8′ will force the corresponding lever 25, 25′ to move, which in turn will cause the deflection distributing shaft 20 to rotate in the rotating bearings in the mounts 24, 24′, thereby causing a corresponding movement of the other lever 25, 25′, the other thrust rod 21, 21′ and finally the other moveable bearing housing 8, 8′. This can also be seen in the schematic top view of FIG. 5. Here, a situation is described where an uneven feed event between the crusher rolls 3, 4 off-center, more towards the first side 50 of the roller crusher. This will cause the first thrust rod 21 to move towards the first end 51 of the roller crusher 1 and it in turn will cause first lever 25 also to move towards the first end 51 and by its coupling to the deflection distributing shaft 20, the deflection distributing shaft 20 will be forced to rotate in the rotational bearings in the mounts 24, 24′. This rotation will cause a movement of the second lever 25′ to move similar to the first lever 25 and the movement of the second lever 25′ will force the second thrust rod 21′ to perform a movement which is identical to that of the first thrust rod 21 thereby facilitating the parallel movement of the two moveable bearing housings 8, 8′ such that the second, moveable crusher roll 4 is kept parallel with the first, fixed, crusher roll 3 at all times.
[0089] As can be seen in FIG. 5, the resulting forces acting on the bearings of the bearing housings 8, 8′ are directed in the same direction, but the force acting on the first bearing housing 8 will be greater. It is this difference in resulting loads that would otherwise cause skewing of the second crusher roll 4 and jam the moveable bearing housings 8, 8′ in the guiding structure and also cause excessive wear of the roller crusher 1 as a whole. The deflection distributor 100 according to the disclosed invention will act on the excessive load in one end and automatically deflect the same distance in the second end and thereby maintain parallelism, and will also provide for a parallel return, as well as provide for a constant feed pressure profile within the roller crusher 1.
[0090] In FIG. 3, a roller crusher 1 with a deflection distributor refitting kit 100 according to one embodiment of the present invention can be seen, and in FIG. 8 and FIG. 9, a roller crusher 1 with a deflection distributor refitting kit 100 according to another embodiment of the present invention can be seen. The mounts 24, 24′ for the deflection distributing shaft 20 are attached to the end supports 11, 11′ of the frame 2 and the thrust rods 21, 21′ pass through channels 29, 29′ in the end supports 11, 11′. It can readily be understood that other solutions than channels are conceivable, for example recesses or similar in the outer or inner side walls of the end supports 11, 11′. In the embodiments shown in FIG. 3 and FIG. 9, the hydraulic system 10 comprises four hydraulic cylinders 9, 9′, two on each side 50, 50′ of the roller crusher 1, and each of the thrust rods 21, 21′ extends in between the two hydraulic cylinders 9, 9′ respectively. This is advantageous in that it can help achieve a balanced load situation. The mounts 24, 24′ are bolted to the respective end supports 11, 11′ but other fastening options are conceivable to the person skilled in the art, e.g. welding. The thrust rods 21, 21′ are in these embodiments attached to the moveable bearing housings 8, 8′ by means of first pivot bracket 31, 31′ and to the levers 25, 25′ by means of second pivot brackets 30, 30′. Advantages of these pivot brackets will be discussed in detail in relation with FIG. 6. Other fastening means are also conceivable, for example the trust rods 21, 21′ may be fixedly attached by bolting onto the movable bearing housings 8, 8′, and may be attached to the levers 25, 25′ with semi-spherical slide bearings.
[0091] The embodiment shown in FIG. 8, may also comprise four hydraulic cylinders, two on each side of the roller crusher 1, and each of the thrust rods 21, extends in between the two hydraulic cylinders 9, respectively. The hydraulic cylinders 9 are shown in position for the embodiment in FIG. 9.
[0092] FIG. 4 shows a schematic bottom view of a deflection distributor according one embodiment of the disclosed invention arranged and coupled with the movable bearings housings 8, 8′ of the second crusher roll 4 and the first crusher roll 3 is arranged in parallel therewith. With the deflection distributor according to the disclosed invention a mechanical connection between the bearing housings 8, 8′ arranged at the respective two ends of the second crusher roll 4 is created. Thus, any uneven material feed (tramp or feeding characteristics) which is unevenly distributed within the length of the crushing gap) acting on the second crusher roll 4 will, with the overload distributor according to the disclosed invention, result in a parallel movement of both bearing housings 8, 8′, independently of the position of this material uneven feed of material along the length of the crushing gap.
[0093] FIG. 6 shows a deflection distributor refitting kit 100 according to another embodiment of the disclosed invention. The deflection distributor refitting kit 100 comprises the deflection distributor shaft 20 with shanks 25, 25′, and trust rods 21, 21′, and further comprises end supports 11, 11′ onto which the deflection distributor shaft 20 is mounted with the mounts 24, 24′. The trust rods 21, 21′ are arranged in channels 29, 29′ which are provided in each end support 11, 11′ to allow a substantially linear movement of the thrust rods 21, 21′ through the channels 29, 29′. The thrust rods 21, 21′ are arranged with pivot brackets 30, 30′ in first ends 27, 27′ thereof to the shanks 25, 25′, and are also arranged with pivot brackets 31, 31′ in a second end 28, 28′ thereof for future attachment to the movable bearing housings 8, 8′ in a roller crusher 1. The pivot joint 30, 30′ of the thrust rod 21, 21′ and the shank 25, 25′ ensures that a linear or mainly linear movement in the thrust rod 21, 21′ is transferred to the lever 25, 25′ and thus to the deflection distributing shaft 20 without causing unnecessary torsional load in the thrust rod 21, 21′ or in the lever 25, 25′. The pivot joint 31, 31′ of the thrust rod 21, 21′ and the movable bearing housing 8, 8′ will ensure that the linear movement of the bearing housing 8, 8′ is transferred to the thrust rod without causing unnecessary torsional load in the thrust rod 21, 21′ or bearing housing 8, 8′.
[0094] The end supports 11, 11′ are arranged to be easily mounted to the frame 2 of the roller crusher 1 at a first side 50 and a second side 50′ thereof, and may also be arranged to be coupled to at least one hydraulic cylinder 9, 9′ of the hydraulic system 10, 10′ of the roller crusher 1. In the embodiment shown in FIG. 6, the channels 29, 29′ for the thrust rods 21, 21′ on each side 50, 50′ are arranged between two coupling points 32, 32′ for the hydraulic cylinders 9, 9′, and in a position to be aligned perpendicular to and in the same horizontal plane as the central axis of the second crusher roll 4 in the roller crusher 1. With this arrangement, the deflection distributor 100 will act in parallel with the hydraulic system 10, 10′, as described earlier, and allows for an optimal load distribution when fitted to a roller crusher 1 and the load may be distributed in the same vertical plane and thereby cause less stress and torsional forces in the frame 2 of the roller crusher 1.
[0095] FIG. 7 shows a deflection distributor refitting kit 100 according to another embodiment of the disclosed invention. This deflection distributor refitting kit 100 comprises, in addition to the parts shown in FIG. 6, also accumulators 33, 33′ which are arranged to be connected with the hydraulic system 10, 10′ on the roller crusher. By providing the accumulators together with the deflection distributor refitting kit 100 the positioning of the accumulators 33, 33′ may be optimized not to interfere with mount position for the deflection distributor shaft and the thrust rods, but also to keep the accumulators as close as possible to the hydraulic cylinders 9, 9′ in order to minimize pipelines for the transportation of hydraulic fluid back and forth from the accumulators 33, 33′ and the hydraulic cylinders 9, 9′. The accumulators 33, 33′ may further be adapted for the parallel action of the deflection distributor of the disclosed invention.
[0096] The deflection distributor refitting kit 100 in FIG. 7 further comprises one or more replacement rolls 3, 4 for a roller crusher 1. One of the rolls 3 has a flange 34, 34′ attached to each end thereof. The flanges 34, 34′ extend in a radial direction of the roll, and has a height above an outer surface of the roll. As the parallel movement of the second crusher roll 4 is ensured with the deflection distributor refitting kit according to the disclosed invention, the first roll 3 may be equipped with such flanges without any risk of misalignment and thereby no risk of damaging flanges or the surface of the crusher rolls. By having flanges 34, 34′ arranged onto one of the crusher rolls 3 provides a much higher crushing result and a higher overall crushing pressure, and provide an increases throughput of about 10-20% or sometimes even more, in the roller crusher.
[0097] In an alternative embodiment the flanges are arranged on the second crusher roll 4, instead on the first crusher roll 3.
[0098] The deflection distributor kit 100 of FIG. 7 further comprises replacement bearings 5, 5′, 6, 6′ for the crusher rolls 3, 4. Bearings 5, 5′, 6, 6′ used in a roller crusher 1 are worn out after a period of time, and needs to be replaced and to replace these at the same time as the crusher rolls 3, 4 are replaced is beneficial and effective for the refurbishment and service work. Further these replacement bearings may be optimized for a roller crusher with a deflection distributor system arranged thereon, as disclosed above in the summary part of the description.
[0099] As stated above, FIGS. 8 and 9 show a perspective view and a side view of a roller crusher of one embodiment of the present invention. The two hydraulic cylinders 9 are shown with the thrust rod 21 arranged in-between in FIG. 9, while the hydraulic cylinders have been left out in FIG. 8, in order to show the other details more clearly. In this embodiment the mounts 24 are bolted to the respective end supports 11, but as stated earlier other fastening options are conceivable to the person skilled in the art, e.g. welding. The thrust rods 21 are in this embodiment attached to the moveable bearing housings 8, by means of first pivot bracket 31 and to the levers 25, by means of second pivot brackets 30. Other attachment methods, as described in other parts of the application, are conceivable. In this embodiment the deflection distributing shaft 20 with levers 25 and mounts 24 are mounted to a lower end of the frame 2 of the roller crusher 1, while the deflection distributing shaft 20 with levers 25 and mounts 24 are mounted to an upper end of the frame 2 in the embodiment shown in FIG. 3. Arranging the deflection distributing shaft 20 with levers 25 and mounts 24 at or near a lower end of the frame 2 as shown in FIGS. 8 and 9 is sometimes advantageous. It makes maintenance of the bearings of the deflection distributing shaft 20 and levers 25 easier since they are accessible from the lower end of the frame, i.e. at or near ground level. Also, installation is less cumbersome since the parts do not have to be lifted far from the ground. Often, there is a top platform at or near an upper end of the frame 2 with which access is given to equipment from above. With the embodiment shown in FIGS. 8 and 9, such platform does not need to be modified to make room for e.g. the deflection distributing shaft 20 and mounts 24.
[0100] The skilled person realizes that a number of modifications of the embodiments described herein are possible without departing from the scope of the invention, which is defined in the appended claims.
[0101] When mounted in a roller crusher 1, the deflection distributor 100 according to the disclosed invention is idling (no force or pressure action) during balanced feed and uniform material feed distribution, and is only in operation during unstable feed situations, such as non-uniform material feed characteristics along the length of the crushing gap and/or non-crushable material entering off center within the crushing gap. Thus, the deflection distributor 100 is controlling each bearing housing deflection separately by manipulating the accumulator spring constant for the roller crusher keeping a constant feed pressure profile.
[0102] The deflection distributor 100 according to the disclosed invention provides the required instant parallel deflection response time to handle the non-uniform material feed characteristics along the length of the crushing gap.
[0103] Existing solutions within prior art for dealing with non-uniform feed characteristics and/or tramp comprise moving oil from one side to the other to compensate for skewing events developed by uneven feed by means of valves and pumps. However, these systems are not quick enough to limit the skewing to an acceptable level which allows for use of flanges on one of the crusher rolls and at the time preserving the shock absorbing spring effect without overloading or underloading the system. Further, when compensating for non-uniform feed characteristics, the hydraulic systems in these prior art solutions normally adjusts the second crusher roll 4 away from the center of the crushing gap, which decreases the crushing pressure and provides inadequate crushing within the roller crusher. This increases the amount of material which needs to be recirculated.
[0104] Keeping the crusher rolls in parallel and a more or less constant crusher pressure on the feed over the length of the crusher rolls as well as over time is key and important for a uniform production. Further, the inventive deflection distributor position and suspension in a roller crusher together with the design thereof minimizes the inertia and resulting forces from it during rapid movement of the second crusher roll 4.
[0105] The skilled person realizes that a number of modifications of the embodiments described herein are possible without departing from the scope of the invention, which is defined in the appended claims. For example, and as is disclosed in the summary part the deflection distributor may also be arranged with a roller crusher having two crushing rolls being movable within the frame, and in such cases one deflection distributor may be arranged for each crusher roll. It is further possible to arrange the deflection distributor on a roller crusher having crushing rolls which have bearing housings which are pivotably movable relative to a frame. Further, it is possible to arrange mounts of the distributor refitting shaft on a separate stand in the proximity to an end side of a roller crusher frame holding a movable crusher roll instead of connecting it directly to the frame, and still attach the thrust rods to the movable bearing housings of the movable crusher roll.
[0106] The skilled person also realizes that the lever as described herein, should in general be interpreted as the function provided thereby. For example, it is possible to attach the first end of the thrust rod in an off-center manner to the deflection distributing shaft, thereby creating the required leverage. In general, the lever can be achieved in many ways by creating a distance between the attachment of the first end of the thrust rod and a rotational axis of the deflection distributing shaft.
