EP3347131A1 - Verfahren und vorrichtung zur demontage von rollen einer rollenpresse - Google Patents
Verfahren und vorrichtung zur demontage von rollen einer rollenpresseInfo
- Publication number
- EP3347131A1 EP3347131A1 EP16760037.8A EP16760037A EP3347131A1 EP 3347131 A1 EP3347131 A1 EP 3347131A1 EP 16760037 A EP16760037 A EP 16760037A EP 3347131 A1 EP3347131 A1 EP 3347131A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- rollers
- rotation
- pivoting
- supporting structure
- 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
Links
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- 238000003825 pressing Methods 0.000 claims abstract description 123
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
- B30B15/028—Loading or unloading of dies, platens or press rams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
- B30B3/04—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs co-operating with one another, e.g. with co-operating cones
Definitions
- the present invention relates to a method for disassembling rolls of a roll press standing on a substrate, the roll press comprising at least one support structure, at least two rollers mounted on the support structure and at least one pressing device, wherein the rollers in one operation of the roller press in each case Rotate axis to be rotated, each with a rotation axis in
- Pivoting means about a pivot axis relative to the other support structure is pivotable, wherein a distance of the two rollers to each other in the presence of the idler roller in a change position is greater than in the presence of the idler roller in one
- the "supporting structure” effectively refers to the substructure of the rollers of the roller press, that is to say the construction required to support the rollers
- the rollers are suitable for grinding the material to be ground.
- such roles usually have a diameter of at least 1, 0 m, in particular of 1, 5 m, and have a mass of 60 t to 100 t.
- operating forces can occur, which are in the range of 50 MN to 100 MN and thus can exceed the weight of the rollers by about a factor of 100.
- the grinding gap typically has a width of a few centimeters in the application of rock crushing, in particular it is in the range between 10 mm and 70 mm.
- the term "pivoting device” describes a part of the supporting structure on which at least one of the rollers, in particular exactly one roller, is mounted
- Swivel devices are pivotable about their pivot axis, which results in that the mounted on the pivoting roller in the course of pivoting the
- Swivel device is movable relative to the rest of the support structure, in particular on a circular arc.
- the pivoting devices may in particular be formed by a supporting arm formed by steel, wherein a pivoting of the pivoting devices is effected by means of the at least one pressing device.
- the "pressing device” is generally suitable for generating a compressive or tensile force, and thus constitutes an active element which effects a force by supplying external energy ,
- FR 2 755 881 A discloses a roller mill, in particular for cereals or the like, that is foodstuffs, wherein the roller mill is provided with pende-shaped bearing arms for supporting both rollers.
- the bearing arms are vertically aligned and mounted at their upper ends by means of an axle in a machine frame. On the underside of the bearing arms, these are coupled together via a cylinder with a nitrogen gas storage, ie a gas spring, in
- said slings should set the nip.
- WO 2006/045256 A1 describes a three-roll rolling mill for
- the middle roll is fixedly mounted in the frame, whereas the two are movably mounted relative to outer rolls relative thereto. In the case of the two pairs of twos, one roller is thus fixed, while the other one is movable relative to it.
- EP 0 734 770 A1 describes a high-bed roller mill which is suitable for grinding cereals.
- the mill comprises two rollers arranged parallel to one another, which together define a grinding gap.
- One of the rollers is fixed, while the other roller is movably mounted.
- the mobility of the latter roller serves to change the size of the grinding gap.
- the movably mounted roller is movable by means of a piston drive.
- the roller is rotatably mounted on an upper pivot bearing.
- Mahlspalt is limited.
- This invention has set itself the task of automatically changing the distance between the two rollers to each other, wherein the grinding gap is to be made in dependence of a feed of the same with ground material.
- This is achieved by the fact that - as soon as a regrind is entered into the grinding gap - a vertically downward force is exerted on the right roller, which causes the Loswalze to be moved to the other roller.
- the contact pressure automatically drops and the Loswalze is again moved away from the other roller, whereby the Mahlspalt is increased to its maximum extent.
- roller presses have in common that a change of roles is particularly expensive. It is understood that the roles of suitable for grinding stone and minerals roller press are exposed to particularly high loads and subject to a correspondingly heavy wear. Replacement of the rollers is therefore required at certain intervals in order to maintain the performance of the roller press.
- rollers In the prior art it is regularly necessary to change the rollers to disassemble a substantial part of the roller press so that the rollers can be "uncovered” and then transported away, in particular the rollers are moved up and / or to the side, respectively perpendicular to their axes of rotation, from their bearings from the
- Supporting structure taken out, in particular by means of a crane load.
- the present invention has therefore set itself the task of providing a method that simplifies a change of roles over the prior art.
- both rollers are after their release from the support structure and its lowering relative to the
- Support structure transported parallel to their axes of rotation relative to the support structure.
- the process according to the invention has many advantages. These result from the fact that unlike the prior art, the idler roller can not be moved perpendicular to its axis of rotation but parallel to it. As alternative disassembly directions, which are used in the prior art, come in particular a direction upwards, as well as perpendicular to the axis of rotation to the side in question. In both cases, it is necessary to dismantle a considerable part of the roller press, in particular its supporting structure, in order to expose the roller or rollers before their removal. Only then is a respective role freely movable in the prior art and can be removed, for example, be lifted out using a crane load from the roller press.
- the idler pulley is lowered relative to the supporting structure prior to its rotation-parallel movement and thus, to a certain extent, moved "downwards" out of its operating position in which it was previously mounted on the supporting structure
- the idler roll with the supporting structure can be avoided in the course of the rotation-parallel movement of the idler pulley.
- Free space is available, which is suitable from its height to transport the idler.
- the described removal “down” is also particularly advantageous if the space below the idler roller in the operation of the roller press is free of load-bearing components, so consuming before the disassembly of a role
- the idle roller is lowered so far that a collision of the idler roller is avoided with the support structure in the course of their fachsparallelen movement, preferably a lowering of the idler within a range between 3 cm and 30 cm, preferably between 4 cm and 25 cm , more preferably between 5 cm and 20 cm, is made.
- the idler pulley In order to completely remove the idler pulley from the support structure, it is particularly advantageous if it is first moved parallel to its axes of rotation by at least its entire length, the "length" of the roller including its end stub shaft in that an end of the idle roller facing away from the direction of movement should be completely removed from the supporting structure, in order then to be able to be transported further away
- the idler roller With regard to the direction of movement of the idler roller, it is also particularly advantageous if it is remote from its associated drive device.
- the latter serve to drive the roller and are for this purpose connected to a shaft of the roller in a torque transmitting manner.
- a connection of the associated drive device with the roller Before dismantling a roller, a connection of the associated drive device with the roller is to be released, wherein the drive device is arranged in the axial extension of the respective roller next to the roller. To avoid degradation of the drive device, the role should therefore in one of the
- the idler preferably by a maximum of 3 cm, more preferably a maximum of 1, 5 cm raised becomes.
- the lifting of the role should only cause their withdrawal from their bearing seat. Therefore, in principle, a minimum increase is sufficient, at the end of the Losrolle and the
- Swinging devices should be unconnected, so that the pivoting devices are independent of the idler pulley movable and can be moved accordingly.
- Storage surfaces is otherwise advantageously the lowering of the idler pulley the first step in the course of the movement of the same relative to the support structure.
- the idle roller is advantageously lowered initially starting from its operating position and only then moved parallel to its axis of rotation.
- Such a movement of the pivoting devices is particularly easy to produce by means of the pressing device (s), which, instead of exerting a compressive force to press the idler roller against the other roller, advantageously exert a pulling force on the pivoting device (s), around a bearing point of the idler roller at the pivoting device as far as possible to remove from the other role, preferably at least so far that the idle roller is free.
- the idle roller is removed from the supporting structure by means of a transport vehicle after being disassembled.
- the vehicle is preferably positioned below the roller, so that the roller can be stored on the transport vehicle and can then be driven off.
- the transport vehicle can be positioned immediately below the idler roller, that is, within a free space that extends below the roller.
- the transport vehicle is guided on rails that extend at least partially below the rollers, so that the
- Transport vehicle under the rollers can drive.
- Such a hoist may in particular be designed in the form of a hydraulically driven table which can be raised perpendicular to a transport plane of the transport vehicle. It is advantageous if a contact surface on which the respective role to rest, is designed curved and in particular to a curvature of a
- the transport vehicle has a hoist
- the hoist can be positioned relative to the roll to be lifted, while a position of the transport vehicle does not have to be adjusted.
- the latter preferably has a width that corresponds to at least a sum of the diameters of both rollers, so that the hoist can be easily moved under both roles.
- it is particularly advantageous for the method if, after the idler roll, the other roll is further dismantled, in particular in the same way as the idler roll.
- Stub shafts are stored.
- this storage is done by means of the pivoting means, in the case of a fixed role by means of corresponding bearing points on the support structure.
- the rollers In order to be able to be moved parallel to their axes of rotation, the rollers must be free at least to one side, that is to say in a rotation-parallel axis
- Swiveling devices are pivoted into a change position.
- a comparable release is not possible in a fixed role, since the bearings of the fixed roller are not movable. [37] Therefore, it is necessary to move the roller itself instead of the bearings and thereby expose.
- the inventive method is particularly well by means of a roller press and a transport vehicle for disassembly of rollers of the roller press feasible, the roller press comprising at least one support structure and at least two rollers mounted on the support structure, the rollers in an operation of the roller press each about an axis of rotation be rotated, each with a rotation axis in
- Lengthwise direction of the associated roller extends, wherein the axes of rotation are parallel to each other and oriented horizontally, so that the rollers together define a grinding gap into which the material to be ground is introduced and then grindable between the rollers, the
- Transport vehicle comprising at least one hoist, wherein the hoist is movable perpendicular to a horizontal transport plane relative to the rest of the transport vehicle, perpendicular to a longitudinal axis of the transport vehicle and parallel to the transport plane relative to the rest of the transport vehicle.
- the support structure below the rollers has a free space into which the transport vehicle can enter, so that the transport vehicle can contact at least one of the rollers from its underside, wherein at least one roller can be lowered by means of the hoist relative to the support structure is.
- the device according to the invention is particularly well suited for gripping at least one roller, preferably both rollers, from its underside and then lowering it relative to the supporting structure so far that a collision occurs in the course of a subsequent movement of the respective roller in its direction of rotation with the supporting structure is not to be feared.
- a disassembly further parts of the support structure can here - in contrast to the prior art - account for the most part.
- the change of the role (s) is therefore considerably simplified when using the device according to the invention.
- the space created below the rollers is particularly well suited to receive a transport vehicle described above and dismantle the rollers in this way completely without the use of a crane or the like.
- free space is to be understood as meaning that the associated space is free “the components carrying the loose parts”. This is of particular importance insofar as the free space does not have to be used to support the lottery. This means that all components that could be placed in the free space (regrind hopper, partitions, press housings, etc.) may extend within the free space, but are only important for operation of the roller press, not for their static integrity. From this it follows that a "free space” designated here also offers a free space in the sense of the present application is when it is spatially blocked by various components in an operating condition. In any case, these components are readily removable, so that the described advantage of the accessibility of at least the idler roller from its underside still remains in the course of a roll change.
- a vertically measured height of the free space is at least 0.5 m, preferably at least 0.75 m, more preferably at least 1.0 m. These dimensions make it possible to disassemble the idler from its underside, for example by means of a transport vehicle movable on rails.
- the free space defined in this way extends at least in the idle roller, preferably in both rollers, over the entire width of the respective roller and / or over an entire axial length of the respective roller which has this measured parallel to its axis of rotation. In this way, it is ensured that the respective role within the space is movable, in particular in the
- Free space can be lowered into it and moved parallel to its axis of rotation within the free space.
- Half frame includes, wherein the half-frame viewed in the longitudinal direction of the rollers are arranged one behind the other and each half frame with at least one of
- Swiveling devices cooperates and in each case has at least one support and at least one rigidly connected to the support bolt.
- Such a half-frame construction as shown in the following embodiments, is particularly well suited to create the described space below the rollers, which can then be used for the transport vehicle.
- roller press for grinding regrind, in particular minerals
- the roller press comprising at least one support structure (2), at least two rollers (3, 4) mounted on the support structure (2) and at least one Pressing device (5), wherein the rollers (3, 4) each about an axis of rotation (6, 7) are rotatable, each extending in the longitudinal direction of the associated rollers (3, 4), wherein the axes of rotation (6, 7) are oriented parallel to each other and horizontally, so that the rollers (3, 4) together define a grinding gap (8), in the grist being input and then between the rollers (3, 4) can be grinded, wherein at least one of the rollers (3, 4) is designed as a idler roller (4) which cooperates with at least two pivoting means (9, 10), wherein the idler roller (4) is mounted in each case at a bearing point (1 1)
- Pressing device (5) by means of the pivoting means (9, 10) about a pivot axis (13) relative to the other support structure (2) is pivotable, whereby a distance between the axes of rotation (6, 7) of the idler roller (4) and the other role ( 3) is variable, wherein a force between a respective pivoting device (9, 10) and the rest of the support structure (2) at least by means of the pressing device (5) and the respective pivot bearing (34) is transferable, characterized in that a line of action (35 ) at least one resultant (36) resulting from operating forces, which is introduced by a pivoting device (9, 10) at its associated pivot bearing (34) into the rest of the supporting structure (2), at least within a half-space (39)
- a "line of action” describes the straight line along which a force acts and is independent of any amount of force and only describes the direction of the force.
- the operating forces are registered starting from the idler roll in the pivoting devices and then derived by means of the pivoting devices to the respective pivot bearings, wherein the operating forces at least partially on the pivot bearings in the rest of the support structure be removed.
- a portion of the operating forces can also by means of the
- Weight forces of the rollers In particular, the operating forces can be a factor of 100 above the weight forces. This finding leads first to the fact that an efficient derivation of the operating forces occurring is crucial for an efficient design of the supporting structure.
- Design dimension for the supporting structure Due to the course according to the invention of the line of action of the resultant, which acts on a pivot bearing, within the supporting structure, an excessively high load on the supporting structure and a concomitant occurrence of particularly large bending moments are avoided.
- the guiding of the invention results in the line of action of the resultant (at least in the defined half space) within the supporting structure that the occurring forces can be removed at least to a significant extent by means of tensile and compressive forces compared to bending moment loads are better to control.
- This force guide according to the invention in turn has the advantage that the supporting structure can be made comparatively slim. This, in turn, has the advantageous effect that a space "around the rollers" can be better kept free than in the prior art, which space can then be used for changing the rollers.
- the position of the line of action of a resultant on a pivot bearing can be determined for example by graphic construction of a force corner, if only the position of the line of effect of the resultant is unknown, that is, the system is internally determined statically.
- the other forces can then be entered with direction and amount, with the force sought the force must close because of the demand for static equilibrium at the end remaining gap.
- the direction of the unknown force vector then corresponds to the direction of the line of action, wherein it is also known that it acts in the respective pivot bearing.
- the magnitude of the force can even be determined by the length of the force vector.
- the position of the line of action of the pressing device is generally known, since the pressing device is preferably designed in the static sense as a pendulum rod, that is, both on the support structure and on or the associated
- Swivel devices is articulated and therefore only suitable for transmitting axial forces, while lateral forces and bending moments can not be transmitted.
- the line of action of a pressing device is therefore parallel to or even identical to its longitudinal axis.
- a point of application of the line of action on the supporting structure is known, namely on a spherical bearing, on which the pressing device is preferably mounted on the supporting structure.
- Swivel device is stored, usually known.
- the idea is that the line of action is oriented at least essentially horizontally, since the operating forces acting on the roll almost exclusively act horizontally, and in addition to
- this line of action which is determined in such a way or otherwise in any other way, is within the described half space within the
- the at least one pressing device is connected in a region of a rigid corner of an associated half-frame to the rest of the supporting structure, preferably with the formation of a pivot bearing.
- the roller press according to the invention comprises two
- the support structure comprises at least two half frames, wherein the half frame viewed in the direction of the axes of rotation of the rollers are arranged one behind the other, each half frame cooperates with at least one of the pivoting and at least one support and at least one rigidly to the Support has connected latch.
- Such a support structure is particularly favorable to obtain below the roles of a free space, which is then available for a roll change.
- the bolt may serve, in particular, to carry a roller facing away from the support, which is preferably designed as a loose roller, while a support facing the roller, which is preferably designed as a solid roller, both alone on the support and alone on the bolt as can also be mounted on both components.
- the roll facing the support is mounted directly and in particular exclusively on the support.
- free space designated here is also a free space within the meaning of the present application, if it is spatially blocked by various components in an operating state.Any cases, these components are readily removable, so that the described advantage of accessibility at least the Losrolle from their bottom in the course of a roll change still remains thus defined free space extends at least in the idle role, preferably in both roles, over the entire width of the respective role and / or over an entire axial length of the respective roller, which has measured this parallel to its axis of rotation. In this way, it is ensured that the respective roller is movable within the free space, in particular lowered into the free space and can be moved parallel to its axis of rotation within the free space.
- the line of action of the resultant of a respective pivoting device extends at its pivotal support between the pivot bearing and the support within the associated heald frame, preferably within the respective latch.
- the support of a half-frame is, so to speak, arranged laterally next to the rollers, while the bolt extends from the support in the direction of the rollers.
- the course of the resultant inside the bolt avoids the formation of large bending moments in the bolt and thus allows - as explained above - a slim dimensioning of the bolt with the advantage that the space below the rollers are kept substantially free. An access to the rollers from the bottom side is thereby particularly simplified.
- At least one roller is designed as a fixed roller, wherein a movement of the fixed roller relative to the support structure is at least not possible to any appreciable extent.
- the support structure comprises the described half-frame, it is particularly advantageous if the fixed roller are arranged directly on the support and the idle roller on a side facing away from the support of the fixed roller.
- the fixed roller is mounted directly on the supports, so acting on the fixed role
- roller press according to the invention further ausgestaltend are the roller press according to the invention.
- Swiveling each executed in the form of an elongated lever.
- a lever is characterized in that its length significantly exceeds its width along a centerline.
- Such pivoting devices are particularly well suited to a favorable lever arm ratio between the pressing device and the idler pulley
- Swivel device at least 1, 5 times, preferably at least 1, 7 times, more preferably at least 2 times as large as a lever arm between the axis of rotation of the idler and the pivot axis of the same pivoting device.
- Ratio corresponds to a balance of forces between the pressing force caused by the pressing device relative to the pressing force acting on the idler roller.
- a lever arm ratio of 2: 1 pressing device - pivot axis to idle roller - pivot axis acts on the idler roller twice the force exerted by the pressing device contact pressure. Since roller presses according to the present invention sometimes considerable operating forces in the aforementioned range occur, it may for the
- a described Hebelarmwar is basically independent of a specific embodiment of the pivoting advantageous. This may also be the case, for example, if the pivoting devices are possibly not designed as levers.
- roller press in a further advantageous embodiment of the roller press according to the invention is a center line of a pivoting device extending between the opposite ends, executed deviating from a straight line, in particular bent and / or kinked, so that a vertically measured height of the pivoting device is less than one along the centerline measured stretched length of the pivoting device.
- a vertically measured height of the entire support structure of the roller press can remain relatively flat, so that the
- Roller press can be made compact overall.
- a line of action of a force exerted by means of a pressing device on one or both pivoting means cuts a connecting line of the point of application of the pressing device with the pivot bearing or the pivot axis as steeply as possible, in particular at an angle between 70 ° and 110 °, preferably between 80 ° and 100 °, more preferably of 90 °.
- a total deflection angle of the respective pivoting device in the case of a kink of the bending angle, between 20 ° and 70 °, preferably between 30 ° and 60 °, more preferably between 40 ° and 50 °.
- Such an angle is particularly favorable to support the pivoting devices on the supporting structure and at the same time to keep the overall height of the supporting structure as flat as possible.
- the bearing point and the pivot axis are arranged at least substantially vertically above one another on a respective pivoting device.
- This is advantageous insofar as a contact pressure of the idler roller against the other roller can be generated particularly efficiently.
- the operating forces of the two rollers act essentially in the horizontal direction. Consequently, the idle role in the operation of the roller press strives to dodge in the horizontal direction, to which it is prevented by the pressing device. The latter takes on a deflection of the idler from its operating position a certain stroke, but pushes the idler immediately back to their original position.
- the arrangement of the pivot bearing together with its pivot axis vertically above the idler roller is advantageous insofar as an entire length of the pivoting device which extends between the pivot bearing and the bearing point of the idler pulley, is effective as a lever for the idler roller, since the contact pressure of the idler roller in horizontal Direction takes place.
- this type of execution is particularly efficient for the construction of the pivoting device.
- the roller press according to the invention further ausgestaltend the at least one pressing device is supported against the rest of the support structure, so that a force between at least one pivoting device and the other support structure, preferably directly, by means of the pressing device is leitbar.
- a pressing force which is exerted by means of the pressing device on the pivoting device and then on the idler pulley, anchored to the supporting structure itself, so that an internal power flow is made possible within the supporting structure.
- portions of the operating forces which can be intercepted by means of the pressing device of the or the pivoting devices and then introduced into the supporting structure.
- pivot bearings of the pivoting means are arranged on the other support structure, so that abraded forces on the pivot bearings are introduced into the supporting structure. This arrangement allows a
- the roller press is designed as follows: [76] It comprises a roller press standing on a substrate for grinding regrind, in particular minerals, comprising at least one support structure, at least two rollers mounted on the support structure and at least one
- rollers are each rotatable about a rotation axis, wherein in each case an axis of rotation extends in the longitudinal direction of the associated roller, wherein the
- Rotary axes are parallel to each other and oriented horizontally, so that the roles together define a grinding gap, in which the material to be ground and then grindable between the rollers, wherein at least one of the rollers is designed as a loose role, which cooperates with at least two pivoting means, wherein the idle role in their opposite end portions are each mounted on a bearing point of a pivoting device, wherein the at least one pressing device engages at an attack point on at least one of the pivoting devices, so that the idler roller by the pressing means by means of the pivot means about a pivot axis relative to the other support structure is pivotable, whereby a distance between the
- Rotary axes of the idler roller and the other role is changeable, wherein - viewed in a vertical direction - is the bearing point of the idler roller below the pivot axis of the respective pivoting device and below the associated point of attack of the pressing device at a respective pivoting device.
- the arrangement according to the invention results in the idler roller being suspended on the pivoting devices, wherein the pivoting devices remove the bearing forces caused by the idler pulley upwards. An immediate load transfer starting from the Losrolle down is therefore not required, so on
- the particular advantage of the construction according to the invention is that it makes it possible to disassemble at least the idle roller, preferably both rollers, from their lower sides. This is based on the consideration that the possibility of using this space is created by the described freedom of a space below the Losrolle of essential components.
- a corresponding procedure is not possible because the space below the idler pulley is not accessible, so that dismantling usually takes place by lateral, perpendicular to the axis of rotation of the idler pullout or a move upwards.
- Supporting structure (2) comprises at least two half-frames (25, 26), wherein the half-frames (25, 26) in the longitudinal direction of the rollers (3, 4) arranged one behind the other, each half-frame (25, 26) with at least one of the pivoting devices ( 9, 10) and in each case has at least one support (27) and at least one rigidly connected to the support (27) latch (28).
- roller press (1) according to one of claims 1 to 3, characterized in that at least one roller (3, 4) is designed as a fixed roller (3), wherein a movement of the fixed roller (3) relative to the supporting structure ( 2) is at least not possible to a significant extent.
- roller press (1) according to one of claims 1 to 4, characterized in that a line of action (29) of a resultant (30) located at a bearing point (37) of the other roller (3) and as a result of operating forces forms the roller press (1), extends at least substantially horizontally.
- roller press (1) according to one of claims 2 to 5, characterized in that the bearing points (37) of the other roller (3) directly to the supports (27) of the half frame (25, 26) are formed.
- roller press (1) according to one of claims 1 to 6, characterized in that the pivoting means (9, 10) are each designed in the form of an elongated lever.
- a roller press (1) according to any one of claims 1 to 7, characterized in that a center line (20) of a respective pivoting device (9, 10) extending between opposite ends (21, 22) of the pivoting device (9, 10), deviates from a straight line, is in particular bent and / or bent, so that a vertically measured height (23) of the pivoting device (9, 10) is smaller than a straight length of the pivoting device (9) measured along the center line (20) , 10).
- roller press (1) characterized in that the pivoting means (9, 10) each have at least one kink (24), which is preferably arranged in the region of the respective associated pivot bearing (34) , wherein the pivoting device (9, 10) at the kink (24) preferably has a bending angle (a) between 20 ° and 70 °, more preferably between 30 ° and 60 °, even more preferably between 40 ° and 50 °.
- roller press (1) according to one of claims 2 to 9, characterized in that the at least one pressing device (5) in a region of a rigid corner (31) of an associated Haibrahmens (25, 26) to the rest of the supporting structure ( 2) is connected, preferably with the formation of a hinge bearing (52).
- roller press (1) according to claim 1, characterized in that a line of action (32) of a force acting on a pivoting device (9, 10) by means of the at least one pressing device (5) forms a connecting line (33 ) between the point of attack (12) of the pressing device (5) and the pivot bearing (34) of the
- Roller press (1) according to one of claims 1 to 12, characterized in that the bearing point (1 1) of the idler pulley (4) on a respective pivoting device (9, 10) at a lower end (22) of the pivoting device (9, 10) is arranged so that between a lower end (15) of the idler pulley (4) and the ground, a free space (16) which is free from a construction supporting the idler roller (4).
- Another roller press in which a roll change compared to the prior art is possible in a simplified manner, can be as follows:
- Roll press (1) which stands on a substrate and grinds ground material, in particular minerals, comprising at least one support structure (2), at least two rollers (3, 4) mounted on the support structure (2) and at least one
- rollers (3, 4) in each case about an axis of rotation (6, 7) are rotatable, wherein in each case an axis of rotation (6, 7) in the longitudinal direction of the associated roller (3, 4), wherein the axes of rotation (6, 7) are oriented parallel to each other and horizontally, so that the rollers (3, 4) together define a grinding gap (8) into which the material to be ground can be introduced and then grindable between the rollers (3, 4), at least one of the Rolls (3, 4) is designed as a loose roller (4) which cooperates with at least two pivoting means (9, 10), wherein the idler roller (4) in their opposite
- Swivel axis (13) relative to the rest of the support structure (2) is pivotable, whereby a distance between the axes of rotation (6, 7) of the idler pulley (4) and the other roller (3) is variable, characterized in that - in the vertical direction considered - at a respective pivoting device (9, 10), the bearing point (1 1) of the idler roller (4) below 1
- Pressing device (5) is located.
- This arrangement is based on the idea of arranging the idle roller at a "deepest point" of the pivoting device so that no load-bearing component extends underneath the idler pulley
- the arrangement described to some extent means that both the pivoting bearing and the point of application of the pressing device "The same side” of the idler pulley, that is, the parts are not arranged on opposite sides of the idler pulley.
- the idle roller is arranged “furthest down", and therefore neither the pivot bearing nor the point of application of the pressing device are below the idler pulley, whereby it is not mandatory, but nevertheless particularly advantageous, that the pivoting devices as such do not extend downwards beyond the idler pulley ,
- the arrangement according to the invention causes the idler roller to be hung on the pivoting devices, the pivoting devices abrading the bearing forces caused by the idle roller upwards. An immediate load transfer starting from the Losrolle down is therefore not required, so on
- the particular advantage of the construction according to the invention is that it makes it possible to disassemble at least the idle roller, preferably both rollers, from their lower sides. This is based on the consideration that the possibility of using this space is created by the described freedom of a space below the Losrolle of essential components. In particular, it is possible, at least the
- a disassembly from below can be achieved particularly easily and in particular quickly.
- Such a dismantling method can be carried out very quickly in comparison to today's common methods, so that downtime of the roller press and resulting costs can be reduced.
- the arrangement according to the invention of the idler pulley on the pivoting devices makes it possible to use the space below the idler pulley in a particularly flexible way, which enables a more rapid roll change and consequently a shorter idle time of the roller press as a result of a roll change and thus solves the underlying object ,
- the other role is also stored such that no components carrying this role extend below the roller. This is particularly easy, for example, by the other role is performed as a fixed role and is connected directly by means of a lateral support on the support structure. Below the roller then remains a space that is free of the roller bearing parts, so that here is a particularly easy access to the role from below is possible.
- the roller press is of particular advantage when the bearing point of the idler pulley is arranged on a respective pivoting device at a lower end of the pivoting device, so that between a lower end of the idler pulley and the ground, a free space extends free from the idle role supporting structure is.
- the "lower end" of the pivot means in this context means that a lowermost point of the idler pulley preferably does not extend, or at least does not substantially extend, downwards beyond a lowest point of a respective pivoting device
- free space for "loose-roll components” is particularly important in that the space does not have to be used to support the idle role, which means that all the components that could be placed in the clearance ( Mahlguttrichter, Mahlgutleitleaneden, partitions, press housing, etc.), although within the free space, but only for operation of the roller press are of importance, not for their static support. It follows that a "free space” designated here is also a free space within the meaning of the present application, if it is spatially blocked by various components in an operating state.
- these components are readily removable, so that the described advantage of the accessibility of at least the idle roller, preferably all rollers, from its underside still remains in the course of a roll change.
- the free space defined in this way extends at least in the idle roller, preferably in both rollers, over the entire width of the respective roller and / or over an entire axial length of the respective roller which has this measured parallel to its axis of rotation. In this way, it is ensured that the respective roller is movable within the free space, in particular lowered into the free space and can be moved parallel to its axis of rotation within the free space.
- a vertically measured height of the clearance is at least 0.25 m, preferably at least 0.50 m, more preferably at least 0.75 m. These dimensions make it possible to dismantle the idler roller from its underside, for example by means of a transport vehicle movable on rails or a different type of underground, as is apparent from the exemplary embodiment. Alternatively or additionally, it may be advantageous if the free space extends over a height which is at least 10%, preferably at least 20%, more preferably at least 30%, of the roll diameter of the respective roll.
- lever arm between the pivot axis and the point of engagement of an associated pivoting device at least 1, 5 times, preferably at least 1, 7 times, more preferably at least 2 times as large as the lever arm between the axis of rotation Losrolle and the pivot axis of the same pivoting device.
- the ratio described corresponds to a balance of forces between the pressing force caused by the pressing device relative to the pressing force acting on the idler roller.
- lever arm ratio of 2: 1 acts on the idler roller twice the force exerted by the pressing device contact pressure.
- Diameter but larger stroke to use which is economically more advantageous than a reverse diameter-stroke ratio.
- Pivoting means are pivotable about an identical pivot axis, that is, as it were arranged offset along one and the same pivot axis.
- the pressing devices can be designed, for example, as a hydraulic device, which comprise a hydraulic cylinder with a hydraulic piston movably mounted longitudinally parallel thereto together with the piston rod. This version allows the
- each pivoting device has its own pressing device, so that such a roller press then comprises a total of two pressing devices.
- the roller press according to the invention further ausgestaltend the at least one pressing device is supported against the rest of the support structure, so that a force between at least one pivoting device and the other support structure, preferably directly, by means of the pressing device is leitbar.
- a pressing force which is exerted by means of the pressing device on the pivoting device and then on the idler pulley, anchored to the supporting structure itself, so that an internal power flow is made possible within the supporting structure.
- portions of the operating forces which can be intercepted by means of the pressing device of the or the pivoting devices and then introduced into the supporting structure.
- pivot bearings of the pivoting means are arranged on the other support structure, so that abraded forces on the pivot bearings are introduced into the supporting structure. This arrangement allows a
- the pivoting devices are each designed in the form of an elongated lever.
- a lever is characterized in that its length significantly exceeds its width along a centerline.
- Swivel devices are particularly well suited to set a favorable lever arm ratio between the pressing device and the idler pulley.
- a center line of a pivoting device extending between the opposite ends thereof, deviating from a straight line, in particular bent and / or kinked, so that a vertically measured height of the pivoting device is less than one along the center line measured length of the pivoting device.
- Support structure of the roller press can remain relatively flat, so that the
- Roller press can be made compact overall.
- Pressing device a line of action of force exerted by means of a pressing on one or both pivoting force a connecting line of the point of application of the pressing with the pivot bearing or the pivot axis as steep as possible, in particular at an angle between 70 ° and 110 °, preferably between 80 ° and 100 °, more preferably 90 °.
- Swiveling device it is particularly advantageous if an entire deflection angle of the respective pivoting device (in the case of a kink of the bending angle) between 20 ° and 70 °, preferably between 30 ° and 60 °, more preferably between 40 ° and 50 °. Such an angle is particularly favorable to support the pivoting devices on the supporting structure and at the same time to keep the overall height of the supporting structure as flat as possible.
- the bearing point and the pivot axis are arranged at least substantially vertically above one another on a respective pivoting device. This is advantageous insofar as a contact pressure of the idler roller against the other roller can be generated particularly efficiently. The operating forces of the two rollers act essentially in the horizontal direction.
- the idle role in the operation of the roller press strives to dodge in the horizontal direction, to which it is prevented by the pressing device.
- the latter takes on a deflection of the idler from its operating position a certain stroke, but pushes the idler immediately back to their operating position.
- the arrangement of the pivot bearing together with its pivot axis vertically above the idler roller is advantageous insofar as an entire length of the pivoting device which extends between the pivot bearing and the bearing point of the idler pulley, is effective as a lever for the idler roller, since the contact pressure of the idler roller in horizontal Direction takes place.
- this type of execution is particularly efficient for the construction of the pivoting device.
- the support structure comprises at least two half-frames, the half-frames in
- each half frame cooperates with at least one of the pivoting means and at least one support and at least one rigidly to the support
- the half frames are suitable for supporting the rollers in their two lateral end sections.
- the rollers have, for example, on both sides via stub shafts, which can then be stored on the supporting structure by means of roller bearings, in the case of the idler roller on the pivoting devices.
- the roller bearings allow rotation of the roller but absorb vertical and horizontal bearing forces.
- the roller bearings can be designed in particular as a rolling bearing or plain bearings.
- Swiveling devices are mounted on the bars of the half frame.
- the bars extend, for example, starting from the supports in a horizontal direction and act in a static sense as cantilevers. In itself, the bars act as tie rods, which compensate for the grinding forces in the grinding gap and the contact pressure.
- a bolt is connected to a respective support by means of bending-resistant corners, so that bending moments can be introduced from the bolts into the associated supports.
- the other roller is advantageously mounted directly on the supports, wherein bearing elements of the other roller are formed at associated bearing points of the roller, in particular on stub shafts, and at bearing points on the supports.
- the storage of the other role directly on the support is particularly favorable for the load transfer of this role, in particular a leadership of the forces is avoided by the bolt.
- the execution of this other role is fixed role is particularly meaningful.
- roller press is designed as follows:
- It comprises at least one supporting structure, at least two at the
- rollers are each rotatable about a rotational axis, each extending in the longitudinal direction of the associated rollers, wherein the axes of rotation are parallel to each other and oriented horizontally, so that the rollers together define a grinding gap into which the millbase be introduced and then grindable between the rollers, wherein at least one of the rollers is designed as a loose role, which cooperates with at least two pivoting devices, wherein the idler roller is mounted in their opposite end portions each at a bearing point of a pivoting device, so that reaction forces, at least as a result of Operating forces acting on the idler roller, in the pivoting devices and then in the rest of the support structure can be introduced, and wherein the other role is mounted on at least two bearing points on the support structure, wherein each pivot means by means of at least a pivot bearing are mounted on the other supporting structure, wherein the at least one pressing device engages at an attack point on at least one of the pivoting devices, so that the idler
- Rotary axes of the idler roller and the other role is variable, wherein a force between a respective pivoting device and the other support structure is transferable at least by means of the pressing device and the respective pivot bearing, wherein a line of action of at least one resulting from operating forces resulting from a pivoting device at their associated pivot bearing in the rest
- Supporting structure is introduced, at least within a half-space extending continuously within the support structure, wherein the half-space, starting from a vertical plane which bears tangentially on a side facing away from the idler roll side on the other roller, extending in the direction of the idler pulley.
- a "line of action” describes the straight line along which a force acts and is independent of any amount of force and only describes the direction of the force.
- the operating forces are registered starting from the idler roller in the pivoting devices and then derived by means of the pivoting devices to the respective pivot bearings, wherein the operating forces are at least partially removed to the pivot bearings in the rest of the supporting structure.
- a portion of the operating forces can also by means of the
- the advantageous guidance of the line of action of the resultant (at least in the defined half space) within the supporting structure means that the occurring forces can be removed at least to a significant extent by means of tensile and compressive forces, which are better in comparison to bending moment loads to master.
- This force guidance in turn has the advantage that the supporting structure can be designed to be comparatively slim.
- This, in turn, has the advantageous effect that a space "around the rollers" can be better kept free than in the prior art, which space can then be used for changing the rollers.
- roller press (1) according to claim 1, characterized in that - Seen vertical direction - at a respective pivoting device (9, 10) the point of attack (12) of the pressing device (5) above the pivot axis (13) is arranged.
- roller press (1) according to claim 1 or 2, characterized in that the bearing point (1 1) of the idler pulley (4) on a respective pivoting device (9, 10) at a lower end (14) of the pivoting device (9 , 10) is arranged so that between a lower end (15) of the Loswalze (4) and the ground a free space (16) extends, which is free of a Losrolle (4) supporting construction.
- roller press (1) according to claim 3, characterized in that the free space (16) has a vertically measured height (17) of at least 0.25 m, preferably of at least 0.50 m, more preferably of at least 0, 75 m.
- roller press (1) according to one of claims 1 to 4, characterized in that a lever arm (18) between the pivot axis (13) and the point of attack (12) of the at least one pressing device (5) of an associated pivoting device (9, 10) at least 1, 5 times, preferably at least 1, 7 times, more preferably at least 2 times as large as a lever arm (19) between the axis of rotation (7) of the idler roller ( 4) and the pivot axis (13) of the same pivoting device (9, 10). 6. Roller press (1) according to one of claims 1 to 5, characterized in that the pressing device (5) is supported against the rest of the supporting structure (2), so that a force between at least one pivoting device (9, 10) and the other
- Supporting structure (2), preferably directly, by means of the pressing device (5) is conductive.
- roller press (1) according to one of claims 1 to 6, characterized in that the pivoting means (9, 10) are each designed in the form of an elongated lever.
- roller press (1) according to one of claims 1 to 7, characterized in that a center line (20) of a pivoting device (9, 10) extending between the
- roller press (1) according to claim 8, characterized in that the
- Swivel device (9, 10) at least one kink (24), which is arranged in the region of the associated pivot axis, wherein at the kink (24) formed kink angle (a) preferably between 20 ° and 70 °, more preferably between 30 ° and 60 °, more preferably between 40 ° and 50 °.
- roller press (1) according to one of claims 1 to 9, characterized in that at a respective pivoting device (9, 10), the bearing point (1 1) and the pivot axis (13) are arranged at least substantially vertically one above the other.
- Roll press (1) according to one of claims 1 to 10, characterized in that on a respective pivoting device (9, 10), the pivot axis (13) and the point of attack (12) of the pressing device (5) in the horizontal direction as well arranged offset perpendicular to the axes of rotation (6, 7).
- roller press (1) according to one of claims 1 to 1 1, characterized in that at least one roller (3) is designed as a fixed roller (3), wherein a noteworthy translational movement of the fixed roller (3) relative to the support structure (2) is prevented at least during operation of the roller press (1).
- roller press (1) according to one of claims 1 to 12, characterized in that the supporting structure (2) comprises at least two half-frames (25, 26), wherein the half-frames (25, 26) in the longitudinal direction of the rollers (3 , 4) are arranged one behind the other, wherein each half frame (25, 26) cooperates with at least one of the pivoting devices (9, 10) and at least one support (27) and at least one bolt (28) rigidly connected to the support (27). having.
- roller press (1) according to claim 13, characterized in that the
- Swivel bearing (34) of the pivoting means (9, 10) to the respective bars (28) of the half-frame (25, 26) are connected.
- roller press (1) according to claim 13 or 14, characterized in that the other roller on the supports (27) of the half-frame (25, 26) is mounted.
- FIG. 2 Another view of the roller press according to Figure 1, but in one
- FIG. 3 is a perspective view of the roller press according to Figure 1,
- Fig. 5 A schematic diagram of the roller press according to Figure 1 in a lateral
- An embodiment shown in the figures comprises a roller press 1 which stands up on a ground.
- the roller press 1 comprises a support structure 2, two rollers 3, 4 and a pressing device 5.
- the rollers 3, 4 are mounted on the support structure 2. This means that the rollers 3, 4 by means of the support structure 2 above the
- the rollers 3, 4 are mounted rotatably drivable, so that they are rotatable about respective axes of rotation 6, 7.
- the axes of rotation 6, 7 are parallel to each other and at least in
- rollers 3, 4 are typically driven in opposite directions. Between the rollers 3, 4 is at least in the operating condition of the roller press 1, a grinding gap 8. In this grinding gap 8, the ground material to be ground by means of the roller press 1 is entered.
- the illustrated roller press 1 is a good-bed roller mill that is suitable for grinding minerals.
- the rollers 3, 4 have a diameter of about 1, 30 m and each have a mass of about 90 t.
- a plurality of so-called "Studs" are arranged, which radially over the
- the roller 4 shown on the right in Figure 1 is designed as a so-called idler 4, ie other role 3, however, as a so-called fixed role 3.
- a Losrolle is movably mounted, which means that a loose role during operation of the respective Roller press according to plan under occurring operating forces laterally, that is perpendicular to its axis of rotation, can dodge.
- Roller press 1 is mounted by means of two pivoting devices 9, 10 movable on the other support structure 2.
- the pivoting means 9, 10 are viewed in the axial direction of the idler pulley 4 at opposite ends of the idler pulley 4 or arranged on the idler pulley 4 and on both sides axially projecting stub shafts 38th
- rollers 3, 4 themselves are - viewed in the axial direction - in an area between the pivoting devices 9, 10 and between corresponding half-frames 25, 26 of the support structure 2 are arranged (the half-frames 25, 26 will be discussed separately below).
- the rollers 3, 4 are mounted on both sides in the supporting structure by means of respectively associated stub shafts 38, the idler pulley 4 being mounted directly in bearing points 37 of the supporting structure 2 in the pivoting devices 9, 10 and the fixed roller 3.
- the storage takes place by means of roller bearings 56, which are designed here as a rolling bearing. These roller bearings 56 serve to remove the bearing forces of the rollers 3, 4, however, to maintain their rotational ability about their axes of rotation 6, 7. In the side views shown here, the rollers 3, 4 as such or their
- roller bearings 56 are almost completely covered visually by the roller bearings 56.
- the rollers 3, 4 are each driven by means of an associated, not shown in the figures drive means, in Figure 4, only one connection point 42 is shown for the idler 4 shown there.
- the drive means are connected to one side of the support structure 2 by means of a likewise not shown coupling to a stub shaft 38 of the respective roller 3, 4.
- a filling funnel 53 by means of which the ground material can be introduced into the grinding gap 8, results.
- the hopper 53 is centrally located above the rollers 3, 4 and extends partially in an open area between the opposing half-frames 25, 26 of the support structure 2.
- the pivoting devices 9, 10 are rotatably mounted on the rest of the support structure 2 and indeed to a pivot axis 13 at a respective one
- pivot bearing 34 is suitable for horizontal and vertical
- the idle roller 4 is mounted on bearings 11 on the pivoting devices 9, 10.
- the bearings 11 is located at an end region near a lower end 14 of the respective pivoting device 9, 10.
- the pivoting devices 9, 10 also act together in each case with a pressing device 5.
- both pivoting devices 9, 10 interact with a common pressing device; however, such a solution is not shown here.
- the pressing devices 5 are adapted to exert forces on the pivoting devices 9, 10, so that they are pivoted about their pivot axes 13 or maintain their position despite acting operating forces. In this way, the idle roller 4 can be moved relative to the fixed roller 3, wherein the idler roller 4 describes a circular path about the pivot axis 13.
- the mobility of the idler pulley 4 can be used, for example, to change a width of the grinding gap 8 and adapted to external conditions.
- an engagement point 12 of the associated pressing device 5, the associated pivot axis 13 and the bearing point 11 of the idle roller 4 are arranged in a specific "sequence" along the respective pivoting device 9, 10 on both pivoting devices 9, 10 the idler pulley 4 or its axis of rotation 7 is arranged below both the pivot axis 13 and the point of engagement 12 of the pressing device 5.
- This arrangement has the particular advantage that the pivoting devices 9, 10 do not extend underneath the idler pulley 4. As a result, that the idler pulley 4 is "carried” as it were, the weight and the operating forces acting during operation of the roller press 1 are thus “suspended". A direct removal of these forces starting from the idler 4 vertically downwards does not take place.
- This arrangement has the particular advantage that below the idle roller 4, a free space 16 extends, which is free in principle of parts of the supporting structure 2.
- the free space 16 extends here over a height 17 of about 2 m and extends from a lower end 15 of the idler pulley 4 to the ground.
- this free space 16 is particularly useful for dismantling the rollers 3, 4 of the roller press.
- Pressing device 5 vertically above the pivot axis 13 of the pivoting devices 9, 10 are arranged.
- This arrangement makes it possible to pivot the pivoting devices 9, 10 using comparably low forces about the pivot axis 13 or to stabilize against occurring operating forces, since a ratio of a lever arm 18 between the point of engagement 12 of the pressing device 5 and the pivot axis 13 relative to a lever arm 19 between the pivot axis 13 and the bearing 11 is particularly favorable.
- a lever ratio of the two lever arms 18, 19 to each other is approximately 2.0, wherein the lever arm 18 between the point of engagement 12 and the pivot axis 13 perpendicular to a line of action 32 by means of the pressing device 5 to the respective pivoting device 9, 10 applied force is measured.
- the pivoting devices 9, 10 are executed deviating from a straight line, that is to say their center lines 20, which result in particular from FIGS. 2 and 5, and have at least one curvature. In the example shown here is this
- Curvature at a respective pivoting device 9, 10 achieved by means of a kink 24, which is arranged in the region of the pivot axis 13 and the pivot bearing 34.
- This kink 24 is particularly well recognizable by the schematic diagram of Figure 5.
- the curved design results in a total height 23 of the
- Kinks 24 are kinked, in the example shown is 45 °.
- Pressing device 5 a pivoting device 9, 10 is pivotally connected to the associated attack Stelie 12 so that only tensile or compressive forces, but no torques are transferable.
- Swivel device 9, 10 and the line of action 32, along which said forces of the pressing device 5 act, is approximately 90 ° in the operating state of the roller press 1 shown in FIG.
- the connecting line 33 describes that line which extends between the point of engagement 12 and the pivot bearing 34 and thus is decisive for the determination of the lever arm 18 (FIG. 5). It is understood that the choice of the angle ß to 90 ° provides maximum utilization of the length of the pivoting devices 9, 10 between the respective pivot bearings 34 and the points of attack 12.
- the pressing devices 5 are on the support structure 2 each by means of a
- Joint bearing 52 connected. These again are bearings which are only suitable for receiving vertical and horizontal forces, but not torques.
- the pressing devices 5 are therefore freely rotatable about an associated rotational axis on their pivot bearings 52 relative to the supporting structure 2. This is particularly clear when comparing the two states of the roller press 1 according to Figures 1 and 2.
- the supporting structure 2 itself is formed by two juxtaposed half-frames 25, 26. These are each formed by a support 27 and a bolt 28, wherein the bolt 28 is connected to form a rigid corner 31 to the associated support 27.
- the rigid corner 31 is adapted to transmit bending moments between the support 27 and the associated latch 28.
- the supports 27 of the Haibrahmen 25, 26 are clamped in the ground. This means that the mounting of the supports 27 on or in the ground is suitable for absorbing all bearing forces and bearing moments acting on the supports 27.
- the half frames 25, 26 are relative to the axes of rotation 6, 7 of the rollers 3, 4
- the fixed roller 3 is mounted directly on the supporting structure 2, namely on the supports 27 of the half-frames 25, 26.
- the support structure 2 has corresponding bearings 37, which are particularly easy to see in Figures 5 and 6.
- the fixed roller 3 is immovably mounted. Dodging of the rollers 3, 4 relative to each other as a result of operating forces can be recorded in the roller press 1 shown here consequently exclusively by means of a movement of the idler 4 and a concomitant (minimal) pivoting of the pivoting devices 9, 10.
- the illustrated roller press 1 has the particular advantage that its geometric design allows a particularly favorable course of forces and thus a particularly slim design of the two half frames 25, 26. This is particularly evident from the representations according to FIGS. 1 and 5.
- Only operating forces are taken into account which act on the rollers 3, 4 in the course of operation of the roller press 1. These operating forces are approximately an order of magnitude of 10 2 over the weight forces exerted by the rollers 3, 4, so that a pure
- Pressing device 5 is executed in the static sense as a so-called pendulum rod, it follows that the pressing device 5 is not suitable for the transmission of torque, but can only transmit compressive and tensile forces. It follows that a Line of action 32 of a force transmitted by a respective pressing device 5 by the end-side articulated connection points of the pressing 5 runs, here by the attack point 12 and the joint bearing 52. The line of action 29 of the fixed roller 3 (or of their bearings 37) and the line of action 32 of Pressing devices 5 intersect each other in each case in an effective line intersection point 41.
- Anpress wornen 5 can thus be determined directly a slope and a position of the lines of action 35 of each acting on the pivot bearings 34 resultant 36.
- a line of action 35 is shown in FIG. 6d.
- stiffening rib 57 recognizable, which is adapted to ablate the forces occurring along this line of action 35 and thus selectively reinforce the support structure 2.
- the construction of the roller press 1 provides the particular advantage that below the rollers 3, 4 there is a free space 16 which is free of the rollers 3, 4 bearing components. It is basically conceivable that the free space 16 is not continuously free of any components; In particular, it is conceivable that auxiliary structures for the removal of the ground regrind or support structures are within the free space 16. However, these auxiliary structures have in common that they are absolutely essential for the derivation of neither weight nor operating forces of the rollers 3, 4 and therefore are readily removable.
- the free space 16 is at least substantially free of solid and non-removable components, it is either permanently free or free of any components using only a very small amount of effort, so that a roll change can take place time-consuming partial dismantling of the roller press 1, in particular the support structure 2, or at least individual essential parts thereof can thus be avoided and consequently downtime of the roller press 1 can be reduced.
- the method for roll change is carried out using a transport vehicle 45 guided on rails 47, wherein the transport vehicle 45 can be moved along the rails 47 along its longitudinal axis 49.
- the rails 47 extend parallel to the axes of rotation 6, 7 of the rollers 3, 4 and below the rollers 3, 4th
- a press housing 54 is first to be removed, which merely serves to encase the rollers 3, 4, in order to avoid undesired dusting and the like in the course of operation of the roller press 1 and
- the trolley 45 can be driven on the rails 47 directly under the rollers 3, 4.
- the idler pulley 4 is still an operating position in which it limits the grinding gap 8 together with the fixed roller 3. It turns out that the rollers 3, 4 at least with part of their Circumference or cross section are positioned between the half frame 25, 26 such that a movement of the rollers 3, 4 parallel to their axes of rotation 6, 7 is not immediately possible because the rollers 3, 4 would otherwise collide with the support structure 2. Therefore, it is necessary in the example shown, the rollers initially perpendicular to their axes of rotation 6, 7 to move, that is, in particular to lower, in order to "expose"
- rollers can be moved by means of the transport vehicle 45 along the rails 47 in the axial direction and finally transported away.
- the fixed roller 3 must be moved laterally at least to a certain extent in the direction of the idler pulley 4 in order to be completely exposed, ie to be able to travel along the rails 47 without risk of collision with the supporting structure 2.
- a movement of the fixed roller 3 towards the idler roller 4 is initially not possible in the example shown, since the idler roller 4 is "in the way.” Therefore, in the method shown here, the idler roller 4 and only then the fixed roller 3 are dismantled.
- the idler pulley 4 is by means of their roller bearings 56 at the bearing points 11 of
- the roller bearings 56 are in this case with associated bearing surfaces 43 on corresponding bearing surfaces 44 of the pivoting devices 9, 10.
- the transport vehicle 45 has a hoist 46, which is designed in the form of a hydraulically driven circular arc shell. A curvature of this circular arc shell is one
- Curvature of the lateral surface of the rollers 3, 4 adjusted so that the rollers 3, 4 at least approximately accurately fitting and forming a stable equilibrium on the
- the transport carriage 45 has a width 50 which corresponds approximately to a sum of the diameters of the two rollers 3, 4.
- the hoist 46 in turn has a width 51 which corresponds approximately to a diameter of a roller 3, 4; in the example shown, the width 51 of the hoist 46 is slightly smaller than the diameter of the rollers 3, 4.
- it is advantageously on the transport vehicle 45 movable, and Although in a direction perpendicular to the axes of rotation 6, 7 of the rollers 3, 4 and parallel to a transport plane 48 of the transport vehicle 45, that is in the horizontal direction.
- the hoist 46 is individually under the respective to be dismantled roller 3, 4 movable.
- the transport vehicle 45 is driven under the rollers 3, 4 and the hoist 46 moves under the idler pulley 4. Subsequently, the hoist 46 is lifted until it comes into contact with the idler pulley 4. Based on this state, the hoist 46 is raised by a further amount to lift the roller bearings 56 of the idler 4 and the bearing surfaces 43 of the idler 4 from their support surfaces 44.
- This further increase of the hoist 46 together with the idler pulley 4 is preferably only a few millimeters up to 1, 5 cm.
- the pressing devices 5 are at least retracted so far that the idler pulley 4 is released.
- Anpress este 5 whose respective reciprocating pistons 55 are typically fully retracted into their associated lifting cylinder, wherein the pivoting devices 9, 10 are pivoted about their pivot axes 13.
- the idler pulley 4 can then be moved freely downwards.
- a movement in the direction of the axis of rotation 7 of the idle roller 4 is not yet possible because the idler roller 4 would collide with the bolt 28 of the front half frame 25, which faces away from the respective drive device. It is understood that a removal of the rollers 3, 4 along parallels to their axes of rotation 6, 7 is particularly advantageous in the direction in which the drive means of the rollers 3, 4 are not.
- Swiveling devices 9, 10 was possible. Therefore, it is necessary here not only lower the fixed roller 3 vertically downwards, but also to move laterally, so to speak in the direction of the no-longer idler pulley 4. It is understood that the lateral movement must take place before the vertical movement, otherwise the fixed roller 3 is put back in their camps. The resulting procedure is the figures 6m to 6p removed.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL16760037T PL3347131T3 (pl) | 2015-09-07 | 2016-08-30 | Sposób i urządzenie do demontażu rolek prasy rolkowej |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015114992.3A DE102015114992B4 (de) | 2015-09-07 | 2015-09-07 | Rollenpresse |
DE102015114997.4A DE102015114997A1 (de) | 2015-09-07 | 2015-09-07 | Verfahren zur Demontage von Rollen einer Rollenpresse |
DE102015114998.2A DE102015114998B4 (de) | 2015-09-07 | 2015-09-07 | Rollenpresse |
PCT/EP2016/070371 WO2017042046A1 (de) | 2015-09-07 | 2016-08-30 | Verfahren und vorrichtung zur demontage von rollen einer rollenpresse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3347131A1 true EP3347131A1 (de) | 2018-07-18 |
EP3347131B1 EP3347131B1 (de) | 2019-12-25 |
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Application Number | Title | Priority Date | Filing Date |
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EP16760037.8A Active EP3347131B1 (de) | 2015-09-07 | 2016-08-30 | Verfahren und vorrichtung zur demontage von rollen einer rollenpresse |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3347131B1 (de) |
PL (1) | PL3347131T3 (de) |
WO (1) | WO2017042046A1 (de) |
ZA (1) | ZA201801916B (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107890942A (zh) * | 2017-11-16 | 2018-04-10 | 徐继传 | 一种矿石粉碎装置 |
CN113842825B (zh) * | 2021-08-30 | 2023-10-31 | 长沙米淇仪器设备有限公司 | 化工分析检测协同性实验仪器及物联网控制系统 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1037823C (zh) * | 1992-05-18 | 1998-03-25 | 加利福尼亚制片机公司 | 一种用于球团机的快速模具更换的定位装置 |
JP2964287B2 (ja) * | 1992-06-08 | 1999-10-18 | 株式会社コスメック | 金型交換装置 |
US8973856B2 (en) * | 2012-05-11 | 2015-03-10 | Metso Minerals Industries, Inc. | Handling apparatus and methods for handling a roller of a roller crusher |
-
2016
- 2016-08-30 EP EP16760037.8A patent/EP3347131B1/de active Active
- 2016-08-30 PL PL16760037T patent/PL3347131T3/pl unknown
- 2016-08-30 WO PCT/EP2016/070371 patent/WO2017042046A1/de active Application Filing
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2018
- 2018-03-22 ZA ZA2018/01916A patent/ZA201801916B/en unknown
Also Published As
Publication number | Publication date |
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EP3347131B1 (de) | 2019-12-25 |
WO2017042046A1 (de) | 2017-03-16 |
PL3347131T3 (pl) | 2020-09-21 |
ZA201801916B (en) | 2019-07-31 |
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