EP3037250B1 - Machine frame for a roller press - Google Patents

Machine frame for a roller press Download PDF

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Publication number
EP3037250B1
EP3037250B1 EP15194199.4A EP15194199A EP3037250B1 EP 3037250 B1 EP3037250 B1 EP 3037250B1 EP 15194199 A EP15194199 A EP 15194199A EP 3037250 B1 EP3037250 B1 EP 3037250B1
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EP
European Patent Office
Prior art keywords
frame
radial
axial
machine frame
rollers
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Application number
EP15194199.4A
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German (de)
French (fr)
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EP3037250A3 (en
EP3037250A2 (en
Inventor
Meinhard Frangenberg
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Takraf GmbH
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MAN Takraf Fordertechnik GmbH
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Publication of EP3037250A2 publication Critical patent/EP3037250A2/en
Publication of EP3037250A3 publication Critical patent/EP3037250A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
    • 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
    • B02C4/28—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • 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 invention relates to a machine frame for a roller press.
  • Roller presses are machines for material bed shredding with mostly two rollers, also called rollers, which are arranged in a machine frame. For the material bed comminution, the particles are drawn into a roller gap, pressed together by the high pressure exerted by the rollers and comminute each other.
  • One of the rollers is usually designed as a fixed roller and one as a loose roller.
  • Roller presses are also known as roller mills or presses and are used in cement production and in mining.
  • the machine frame must absorb the high radial forces and the axial forces that occur. In doing so, twists in the machine frame are to be avoided, since these lead to a misalignment of the rollers and thus to an inhomogeneous pressure distribution with a concomitant deterioration in the size reduction result.
  • the rollers with their bearings are guided in the machine frame and held in position in the axial direction, while at the same time enabling inclination and the possibility of horizontal movement of the rollers or their storage in the frame. Due to the support by hydraulic cylinders, the idler roller has significantly greater freedom of movement than the fixed roller.
  • a roller press which has a cuboid, closed frame, consisting of an upper and lower flange.
  • the radial forces are absorbed by the belts as tensile forces.
  • the axial forces are guided into supports attached to the side of the belts and axially limiting the rollers.
  • the belts are also loaded with a proportion of the weight of the rollers.
  • a disadvantage of this machine frame for a roller press is the high weight and the high effort of dismantling for repair purposes.
  • a roller press comprising a machine frame consisting of several welded elements that are connected to each other with a shear bolt screw connection.
  • the rollers with bearings once as a loose roller with hydraulic support and once as a fixed roller, are guided in the frame with low friction.
  • the closed frame takes on the pressing forces in the radial and axial directions and is therefore designed to be correspondingly rigid.
  • the frame On the fixed roller side, the frame can be opened easily and quickly, so that the rollers with storage can be quickly removed and installed horizontally.
  • This frame is disadvantageous in terms of material and therefore expensive to produce. Repairing the frame is also complex.
  • the WO 2006/084652 A1 describes a machine frame for a roller press according to the preamble of claim 1.
  • the object of the present invention is to propose a simply constructed machine frame for a roller press that is easy to manufacture and is quick to assemble and can absorb the radial and axial forces that occur without torsion.
  • the task is solved by dividing the machine frame into intersecting frame parts according to the acting forces.
  • the machine frame according to the invention for a roller press has an axial frame and at least two radial frames.
  • the terms axial frame and radial frame mean that the axial frame absorb the axial forces of the rollers, in particular the weight and forces that occur when the idler roller is skewed, and the radial frames absorb the radial forces of the rollers, in particular the contact forces.
  • the means for absorbing the radial forces are not rigid, but resiliently mounted in the machine frame.
  • the radial frame is aligned transversely to the axes of rotation of the rollers.
  • the radial frames are rectangular, so each form a flat structure with four beam-like frame elements.
  • the radial frames thus have long sides and short sides, the long sides being arranged horizontally in the assembled state and the short sides vertically. In the assembled state, the levels formed by the individual frames are connected at right angles to one another and thus form a cuboid.
  • the long sides of a radial frame comprise a belt system, having at least one upper flange or one lower flange.
  • the short sides of the radial frame comprise vertical bars, which are arranged in pairs, the radial forces being conducted via the vertical bars to the belts of the belt system, and the belts of the belt system being elastically supported in elastic damping elements.
  • the radial operating force is introduced into the belts via the vertical bars. There is a positive connection between the belts and the vertical bars.
  • the machine frame according to the invention has no shear bolt screw connection between the belts and the force absorption points (belt contact surfaces for the vertical bars).
  • the belts are stressed by the radial operating forces in tension in the direction of expansion.
  • the straps are preferably made of sheet steel or flat steel.
  • the radial frame is preferably constructed as follows.
  • the vertical spars consist of two parallel, vertically arranged, spar-like side parts that are connected to each other at the upper end by the axis of rotation of a swivel joint (pair of vertical spars).
  • the swivel joint is preferably fastened by means of an axis of rotation with slide bearing and locknuts.
  • the axis of rotation carries a suspension joint between the two spar-like side parts.
  • the suspension joint has a lower link.
  • the lower link has a lower link catch hook.
  • the upper end of the vertical bars is attached to the axial frame using the lower link hook of the swivel joint.
  • the fact that these oscillating individual bars are connected via an axis of rotation and the handlebar geometry means that they are automatically applied to the force absorption points of the belt systems when they are hooked into the lower link hooks.
  • the handlebar geometry conveys the partial conversion of the vertical weight force into a horizontal force component.
  • the lower link catch hook attached to the axial frame, has a spherical receiving piece which, while maintaining the degrees of freedom of movement, engages in a complementarily shaped counterpart of the lower link balls on the suspension joint of the vertical bars.
  • the side parts preferably have insertion surfaces at their lower end, preferably on the sides directed away from the swivel joint. These insertion surfaces facilitate the insertion of the side parts into the cavities. For this purpose, they are preferably conically shaped.
  • the insertion surfaces particularly preferably have sliding coatings (for example Teflon).
  • Upper and lower belts are preferably designed as two belts running parallel one above the other, which are referred to as double belts.
  • a belt system can also each have a single belt with a welded-on, forged head part.
  • the double belts are connected to each other at their head ends with special hammer head-like welded constructions - the head connections.
  • the straps run between the two parallel side parts of the vertical bars.
  • the vertical bars are supported in the direction of the radial force on the head parts or head connections of the belts. On those facing away from the vertical bars
  • the ends of the straps have an elastic damping element.
  • the damping element of the belts is pretensioned by the amount (distance) that results from the elongation caused by the operating force.
  • the absorption of the radial forces and the absorption of the axial forces are largely separated, and mutual interference has been largely ruled out.
  • the damping element also mitigates the shocks that occur during operation.
  • the machine frame is simple and individual parts of the frame are easy to replace.
  • the weight-optimized belt systems are held parallel by the axial frame, auxiliary supports are advantageously not required.
  • the belt systems do not absorb any weight from the rollers with bearings and therefore do not have any sliding elements for the loose roller movement.
  • the straps are thus advantageously subjected to pure tensile loads due to the radial forces and achieve a symmetrical expansion appropriate to the component. Due to the absence of the sliding elements, the belt systems do not have to be machined to optimize their length and are inexpensive to manufacture.
  • the axial frame has an upper axial frame part and an lower axial frame part.
  • the upper axial frame part is preferably formed by two U-shaped assemblies which are aligned parallel to the axes of rotation of the rollers.
  • the two U-shaped assemblies are interconnected by structural elements.
  • the lower part of the axial frame is a rectangular structure that forms the base plate of the axial frame.
  • the upper and lower part of the axial frame have means for the sliding movement of the rollers with bearings, preferably slideways.
  • the axial frame lower part thus absorbs the weight of the rollers in addition to the axially acting operating forces.
  • Horizontal, low-friction sliding of the hydraulically supported idler roller in the frame is preferably achieved by the Teflon / polished chrome sheet pairing. Polished chrome sheets are preferably arranged on the upper and lower part of the axial frame; Chambered sliding plates made of Teflon are located on the bearing housing as a sliding counter surface.
  • the individual elements of this pair of sliding elements are preferably screwed together and are therefore advantageously easy to replace as wearing parts.
  • ā€œChamberedā€ is understood here to mean that the sliding plate made of Teflon is arranged in a recess in a carrier plate, so that the recess holds the sliding plate made of Teflon, and the edges of the opening in the carrier plate absorb the thrust forces. The screwing and / or gluing of the sliding plate therefore only has to fix the sliding plate in the carrier plate.
  • the upper and lower axial frame parts have support plates with slide rails on the outside, parallel to the radial frame.
  • Sliding and guide elements are arranged on the housings of the roller bearings, by means of which the rollers are slidably guided on the support plates with slide rails, so that both the freedom of movement of the idler roller required in roller press operation is guaranteed, and the rollers can be installed and removed is.
  • This sliding and guiding system also includes external guides, via which axial forces are introduced into the axial frame.
  • At least one of the vertical beam pairs of the radial frame is solvable.
  • the vertical bars for removing the rollers can advantageously be removed quickly.
  • the bearing housings of both rollers are supported in the radial frame in the horizontal direction.
  • one of the two vertical beam pairs of a radial frame has a system for the storage of a loose roller and the other has a system for the storage of a fixed roller.
  • the support is preferably provided on the fixed roller side via a rubber pressure bearing and on the idler roller side via a rubber pressure bearing and hydraulic cylinder.
  • a foundation frame is located under the machine frame.
  • This foundation frame can form the near-ground beams of the individual frames.
  • the foundation frame is preferably made by means of welded connections.
  • Axial and radial frame parts can preferably be fastened to the foundation frame by means of screw connections.
  • the separate, easy-to-align foundation frame advantageously offers a platform that enables the drive and frame parts of a roller press to be assembled quickly and easily.
  • a strap system includes box-shaped frame elements. These preferably have parallel longitudinal beam elements, between which the belts run.
  • the longitudinal beam elements are screwed to the upper and lower part of the axial frame, the radial operating forces not being passed through the screw connection to the axial frame elements according to the invention due to the elastic mounting of the belts in the box-shaped frame elements.
  • the box-shaped frame elements of a belt system and the axial frame are connected to one another by a vertical bolt as a centering plug connection. Due to the screw connections, the machine frame is easy to assemble and disassemble, and repair work is also easier than with a frame that is welded together from horizontal and vertical frame components.
  • the radial frames are designed to be smaller than the axial frames, so that in the assembled state the radial frames lie within the axial frame. This means that the rollers fit through the axial frame in a direction orthogonal to their axis of rotation. This advantageously simplifies the removal of the rollers, since the axial frame does not have to be removed.
  • the so-called cross frame according to the invention advantageously enables the forces to be clearly separated into the frame components provided for this purpose, i.e. the axial frame absorbs the axial and the radial frame the radial forces.
  • the radial frames no longer have to absorb the weight of the rollers, so there are no bending moments, but largely only tensile forces on the radial frames. Because the axial frame does not have to be designed to absorb the radial operating forces, the axial frame can be made significantly lighter than in the case of known frame shapes, and the weight is reduced.
  • the rollers can be removed very easily and preferably in the direction of the fixed roller. An expansion in the direction of the loose roll is also preferably possible.
  • the construction of the frame as a modular system is very advantageous, since different frame components can be used for roller presses of different sizes.
  • FIG. 1 shows the structure of a machine frame 1 according to the invention for a roller press.
  • This machine frame 1 has an axial frame 2 with an axial frame upper part 21 and an axial frame lower part 22. Perpendicular to it and within the axial frame 2, two radial frames 3 are arranged. There is a foundation frame 4 near the bottom under the axial frame lower part 22.
  • the radial frames each have an upper belt system 32 with an upper belt 321 designed as a double belt and a lower belt system 31 with a lower belt 311 designed as a double belt.
  • Upper and lower belt systems are identical.
  • the short sides of the radial frame 3 form vertical bars, which are each arranged as a vertical bar pair 33.
  • support plates with slide rails 23 are attached to the upper axial frame part 21 and to the lower axial frame part 22.
  • the rigid components of the outer guides 24 are also fastened to the upper axial frame part 21 and to the lower axial frame part 22.
  • Indicated on the lower axial frame part 22 is the housing 6 of the rollers, which prevents comminuted material from escaping from the roller gap during operation.
  • the upper belt system 32 is connected to the upper axial frame part 21 and the lower belt system 31 to the lower axial frame part 22 via screw connections (fastening holes are indicated) and a centering bolt 81 (on the radial frame, concealed below) with counter hole 82 (on the axial frame, concealed above).
  • Figure 2 shows a view of one half of a machine frame 1 according to the invention.
  • a belt system 31, 32 consists of belts 311, 321 and box-frame-shaped, here designed as parallel double belts Brackets which have longitudinal beam elements 37.
  • the individual bars of a pair of vertical bars 33 each engage in the distances between the belts 311, 321 and the longitudinal beam elements 37.
  • the straps 311, 321 have special welded constructions or forged head connections 38 at the respective ends.
  • the belts are mounted in elastic damping elements 36 in the belt system.
  • Fixed and loose rollers of a roller press usually have a fixed bearing and a floating bearing. Shown is the view of the machine frame on the fixed bearing with the fixed bearing of the idler roller 51 and the fixed bearing of the fixed roller 52, each with bearing housings. Both rollers are supported horizontally in the radial frame 3.
  • the system for the loose roller bearing 51 can be seen in the form of a rubber pressure bearing with a hydraulic cylinder 34 which is fastened to the pair of vertical bars 33.
  • the fixed-roller system in the form of a rubber pressure bearing is hidden in the illustration.
  • the hydraulic elements on the idler roller side set the gap between the idler and fixed rollers during operation (operating gap).
  • Slideways 25 are attached to the housings of the fixed bearings 51, 52 and guide the weight of a roller around the belt systems 31, 32 into the lower axial part 22.
  • Chambered sliding plates 25 preferably made of Teflon, are arranged on the sliding guides 25 (see Figure 4 ).
  • Carrier plates with slide rails 23, preferably made of polished chrome plates, are fastened to the upper axial frame part 21 and to the lower axial frame part 22 as a sliding counter surface.
  • the outer guide 24 has both rigid elements 241 fastened to the upper axial frame part 21 or lower part 22 and movable elements 242 fastened to the sliding guides 25 (see Figure 4 ), so that the horizontal movement and inclination of the idler roller is made possible.
  • the outer guides 24 hold the rollers axially in position and guide the axial forces into the axial frame 2.
  • the outer guides 24 are also preferably equipped with the Teflon / polished chrome sheet sliding pair.
  • FIG 3 shows a detailed view of the lower belt system 31 of a machine frame 1 according to the invention, comprising the lower chords 311 connected by means of the welded construction 38 (head connection) and designed as parallel double belts, and the longitudinal beam elements 37 as holders for the belts 311.
  • the longitudinal beam elements 37 are screwed (fastening holes) 39) and a centering pin 81 with counter hole 82 (see Figure 1 ) with the lower part of the axial frame 22 connected.
  • the two individual bars of the vertical bar pair 33 are inserted between the belts 311 and the longitudinal beam elements 37.
  • the vertical beam pair 33 absorbs the radial operating forces and forwards them to the belts 311.
  • the belt heads with the force contact surfaces 331 for introducing the radial forces from the vertical bars 33 into the belts 311 have no screw or bolt connections.
  • the belts 311 are elastically supported in the belt system 31 via a damping element 36. As a result, the radial operating forces are not passed on to the longitudinal beam elements 37 and thus also not to the lower axial frame part 22.
  • Figure 4 shows a side view of the fixed bearing side of a machine frame 1 according to the invention, to illustrate the structure of the roller bearing in the machine frame 1, through which the axial forces are advantageously introduced only in the axial frame 2.
  • Shown is a section of a roller, here the fixed roller 5, a section of the upper axial frame part 21 and the lower axial frame part 22 as well as the lower belt system 31, upper belt system 32 and a vertical spar pair 33 of the radial frame on the fixed bearing side.
  • Slideways 25 are attached to the bearing housing of the fixed bearing 52 and have chambered sliding plates 251, preferably made of Teflon, at their upper and lower ends.
  • the outer sliding plates 251 which are wear parts, can be removed in an advantageous manner without having to remove the rollers with bearings from the frame.
  • Carrier plates with slide rails 23, preferably polished chrome plates, are attached to the axial frame upper part 21 and lower part 22 as a sliding counterpart, preferably with tack welds and / or screws.
  • the rigid components 241 of the outer guides 24 are fastened to the axial frame upper part 21 and lower part 22.
  • the movable components 242 of the outer guides 24 are attached to the sliding guides 25.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Press Drives And Press Lines (AREA)

Description

Die Erfindung bezieht sich auf einen Maschinenrahmen fĆ¼r eine Rollenpresse.The invention relates to a machine frame for a roller press.

Rollenpressen sind Maschinen zur Gutbettzerkleinerung mit zumeist zwei auch als Rollen bezeichneten Walzen, die in einem Maschinenrahmen angeordnet sind. FĆ¼r die Gutbettzerkleinerung werden die Partikel in einen Rollenspalt eingezogen, durch den durch die Rollen ausgeĆ¼bten hohen Druck aneinandergepresst und zerkleinern sich gegenseitig. Von den Rollen ist zumeist eine als Fest- und eine als Losrolle ausgebildet. Rollenpressen werden auch als WalzenmĆ¼hlen oder -pressen bezeichnet und finden bei der Zementherstellung sowie im Bergbau Anwendung.Roller presses are machines for material bed shredding with mostly two rollers, also called rollers, which are arranged in a machine frame. For the material bed comminution, the particles are drawn into a roller gap, pressed together by the high pressure exerted by the rollers and comminute each other. One of the rollers is usually designed as a fixed roller and one as a loose roller. Roller presses are also known as roller mills or presses and are used in cement production and in mining.

Der Maschinenrahmen muss dabei die hohen radialen KrƤfte und zudem die auftretenden AxialkrƤfte aufnehmen. Dabei sind Verwindungen im Maschinenrahmen zu vermeiden, da diese zu einer Fehlstellung der Rollen und damit zu einer inhomogenen Druckverteilung mit einhergehender Verschlechterung des Zerkleinerungsergebnisses fĆ¼hren. Im Maschinenrahmen werden die Rollen mit ihren Lagern gefĆ¼hrt und in axialer Richtung in Position gehalten, bei gleichzeitiger Ermƶglichung einer Schiefstellung und der Mƶglichkeit einer horizontalen Bewegung der Rollen bzw. deren Lagerung im Rahmen. Hierbei hat die Losrolle aufgrund einer AbstĆ¼tzung durch Hydraulikzylinder eine deutlich grĆ¶ĆŸere Bewegungsfreiheit als die Festrolle.The machine frame must absorb the high radial forces and the axial forces that occur. In doing so, twists in the machine frame are to be avoided, since these lead to a misalignment of the rollers and thus to an inhomogeneous pressure distribution with a concomitant deterioration in the size reduction result. The rollers with their bearings are guided in the machine frame and held in position in the axial direction, while at the same time enabling inclination and the possibility of horizontal movement of the rollers or their storage in the frame. Due to the support by hydraulic cylinders, the idler roller has significantly greater freedom of movement than the fixed roller.

FĆ¼r Wartungs- und Reparaturarbeiten ist es regelmƤƟig notwendig, die Rollen aus dem Maschinenrahmen zu entfernen. HierfĆ¼r sind hƤufig schnell entfernbare EndstĆ¼cke auf mindestens einer Seite des Rahmens vorgesehen, mittels derer der Rahmen einseitig zu ƶffnen ist, und die Rollen in horizontaler Richtung entnehmbar sind.For maintenance and repair work, it is regularly necessary to remove the rollers from the machine frame. For this purpose, quickly removable end pieces are often provided on at least one side of the frame, by means of which the frame can be opened on one side and the rollers can be removed in the horizontal direction.

In der DE 10 2005 061 085 A1 wird eine Rollenpresse vorgestellt, die einen quaderfƶrmigen, geschlossenen Rahmen aufweist, bestehend aus einem Ober- und Untergurt. Die RadialkrƤfte werden dabei von den Gurten als ZugkrƤfte aufgenommen. Die AxialkrƤfte werden in seitlich an den Gurten befestigte und die Rollen axial begrenzende TrƤger geleitet. Die Gurte werden dabei auch mit einem Anteil der Gewichtskraft der Rollen belastet. Nachteilig an diesem Maschinenrahmen fĆ¼r eine Rollenpresse ist das hohe Gewicht und der hohe Aufwand einer Demontage zu Reparaturzwecken.In the DE 10 2005 061 085 A1 a roller press is presented, which has a cuboid, closed frame, consisting of an upper and lower flange. The radial forces are absorbed by the belts as tensile forces. The axial forces are guided into supports attached to the side of the belts and axially limiting the rollers. The belts are also loaded with a proportion of the weight of the rollers. A disadvantage of this machine frame for a roller press is the high weight and the high effort of dismantling for repair purposes.

In der DE 10 2005 045 273 A1 wird eine Rollenpresse vorgestellt, aufweisend einen Maschinenrahmen bestehend aus mehreren, geschweiƟten Elementen, die mit einer Scherbolzen-Schraubverbindung untereinander verbunden sind. Die Rollen mit Lagerung, einmal als Losrolle mit hydraulischer AbstĆ¼tzung und einmal als Festrolle, sind im Rahmen reibungsarm gleitend gefĆ¼hrt. Der geschlossene Rahmen Ć¼bernimmt die PresskrƤfte in radialer und axialer Richtung und ist deshalb entsprechend steif ausgebildet. Auf der Festrollenseite ist der Rahmen leicht und schnell zu ƶffnen, so dass die Rollen mit Lagerung horizontal schnell aus- und eingebaut werden kƶnnen. Nachteilig ist dieser Rahmen materialaufwendig und damit kostenintensiv herzustellen. Auch eine Reparatur des Rahmens ist aufwendig.In the DE 10 2005 045 273 A1 a roller press is presented, comprising a machine frame consisting of several welded elements that are connected to each other with a shear bolt screw connection. The rollers with bearings, once as a loose roller with hydraulic support and once as a fixed roller, are guided in the frame with low friction. The closed frame takes on the pressing forces in the radial and axial directions and is therefore designed to be correspondingly rigid. On the fixed roller side, the frame can be opened easily and quickly, so that the rollers with storage can be quickly removed and installed horizontally. This frame is disadvantageous in terms of material and therefore expensive to produce. Repairing the frame is also complex.

Auch in der DE 10 2010 015 374 A1 wird ein Maschinenrahmen fĆ¼r eine Rollenpresse gezeigt. Der Rahmen ist ebenfalls quaderfƶrmig aufgebaut, jedoch wurden die Schraub- und Bolzenverbindungen durch SchweiƟverbindungen mittels eines u-fƶrmigen VerbindungsstĆ¼ckes, aufweisend zwei Schenkel, ersetzt (Stimmgabelform). Dieser Rahmen ist deutlich leichter als der zuvor beschriebene, kann jedoch die auftretenden axialen KrƤfte nur begrenzt aufnehmen, aufgrund der einseitigen funktionsbedingten "offenen" Rahmenausbildung, und wĆ¼rde sich deshalb im Betrieb nachteilig verwinden.Also in the DE 10 2010 015 374 A1 a machine frame for a roller press is shown. The frame is also cuboid, but the screw and bolt connections have been replaced by welded connections using a U-shaped connecting piece, which has two legs (tuning fork shape). This frame is significantly lighter than the one described above, but can only absorb the occurring axial forces to a limited extent, due to the one-sided function-related "open" frame design, and would therefore be distorted during operation.

Die WO 2006/084652 A1 beschreibt einen Maschinenrahmen fĆ¼r eine Rollenpresse gemƤƟ dem Oberbegriff des Anspruchs 1.The WO 2006/084652 A1 describes a machine frame for a roller press according to the preamble of claim 1.

Aufgabenstellung der vorliegenden Erfindung ist, einen einfach aufgebauten Maschinenrahmen fĆ¼r eine Rollenpresse vorzuschlagen, der leicht zu fertigen und schnell zu montieren ist, und der die auftretenden Radial- und AxialkrƤfte verwindungsfrei aufnehmen kann.The object of the present invention is to propose a simply constructed machine frame for a roller press that is easy to manufacture and is quick to assemble and can absorb the radial and axial forces that occur without torsion.

Die Aufgabenstellung wird gelƶst durch eine Untergliederung des Maschinenrahmens gemƤƟ den wirkenden KrƤfte in sich kreuzende Rahmenteile. Der erfindungsgemƤƟe Maschinenrahmen fĆ¼r eine Rollenpresse weist einen Axialrahmen und mindestens zwei Radialrahmen auf. Die Begriffe Axialrahmen und Radialrahmen bedeuten, dass der Axialrahmen die axialen KrƤfte der Rollen, insbesondere die Gewichtskraft und KrƤfte, die bei Schiefstellung der Losrolle auftreten, und die Radialrahmen die radialen KrƤfte der Rollen, insbesondere die AnpresskrƤfte, aufnehmen. Die Mittel zur Aufnahme der RadialkrƤfte sind nicht starr, sondern elastisch im Maschinenrahmen gelagert.The task is solved by dividing the machine frame into intersecting frame parts according to the acting forces. The machine frame according to the invention for a roller press has an axial frame and at least two radial frames. The terms axial frame and radial frame mean that the axial frame absorb the axial forces of the rollers, in particular the weight and forces that occur when the idler roller is skewed, and the radial frames absorb the radial forces of the rollers, in particular the contact forces. The means for absorbing the radial forces are not rigid, but resiliently mounted in the machine frame.

Der Radialrahmen ist quer zu den Rotationsachsen der Rollen ausgerichtet. Die Radialrahmen sind rechteckig ausgebildet, formen also jeweils ein ebenes Gebilde mit vier trƤgerartigen Rahmenelementen. Die Radialrahmen weisen somit LƤngsseiten und Kurzseiten auf, wobei die LƤngsseiten im zusammengebauten Zustand horizontal angeordnet sind und die Kurzseiten vertikal. Im zusammengebauten Zustand sind die durch die Einzelrahmen gebildeten Ebenen rechtwinklig Ć¼ber Kreuz zueinander angeordnet verbunden und bilden somit einen Quader. Die LƤngsseiten eines Radialrahmens umfassen ein Gurtsystem, aufweisend mindestens einen Obergurt oder einen Untergurt. Die Kurzseiten des Radialrahmens umfassen Vertikalholme, die paarweise angeordnet sind, wobei die RadialkrƤfte Ć¼ber die Vertikalholme an die Gurte des Gurtsystems geleitet werden, und die Gurte des Gurtsystems in elastischen DƤmpfungselementen elastisch gelagert sind.The radial frame is aligned transversely to the axes of rotation of the rollers. The radial frames are rectangular, so each form a flat structure with four beam-like frame elements. The radial frames thus have long sides and short sides, the long sides being arranged horizontally in the assembled state and the short sides vertically. In the assembled state, the levels formed by the individual frames are connected at right angles to one another and thus form a cuboid. The long sides of a radial frame comprise a belt system, having at least one upper flange or one lower flange. The short sides of the radial frame comprise vertical bars, which are arranged in pairs, the radial forces being conducted via the vertical bars to the belts of the belt system, and the belts of the belt system being elastically supported in elastic damping elements.

Vorteilhaft werden dadurch die RadialkrƤfte nicht auf den Axialrahmen Ć¼bertragen.As a result, the radial forces are advantageously not transmitted to the axial frame.

Die Einleitung der radialen Betriebskraft erfolgt Ć¼ber die Vertikalholme in die Gurte. Zwischen den Gurten und den Vertikalholmen besteht eine formschlĆ¼ssige Verbindung. Der erfindungsgemƤƟe Maschinenrahmen weist keine Scherbolzen-Schraubverbindung zwischen den Gurten und den Kraftaufnahmepunkten (GurtanlageflƤchen fĆ¼r die Vertikalholme) auf. Die Gurte werden von den radialen BetriebskrƤften auf Zug in Dehnungsrichtung beansprucht. Bevorzugt sind die Gurte aus Stahlblech oder Breitflachstahl gefertigt.The radial operating force is introduced into the belts via the vertical bars. There is a positive connection between the belts and the vertical bars. The machine frame according to the invention has no shear bolt screw connection between the belts and the force absorption points (belt contact surfaces for the vertical bars). The belts are stressed by the radial operating forces in tension in the direction of expansion. The straps are preferably made of sheet steel or flat steel.

Vorzugsweise ist der Radialrahmen wie folgt aufgebaut. Die Vertikalholme bestehen aus zwei parallel verlaufenden, vertikal angeordneten, holmartigen Seitenteilen, die am oberen Ende durch die Drehachse eines Drehgelenkes miteinander verbunden sind (Vertikalholmpaar). Das Drehgelenk wird bevorzugt mittels einer Drehachse mit Gleitlagerung und Nutmuttern befestigt. Die Drehachse trƤgt zwischen den beiden holmartigen Seitenteilen ein AufhƤngungsgelenk. Das AufhƤngungsgelenk weist einen Unterlenker auf. Der Unterlenker verfĆ¼gt Ć¼ber einen Unterlenker-Fanghaken. Das obere Ende der Vertikalholme wird mittels des Unterlenker-Fanghakens des Drehgelenkes am Axialrahmen befestigt. Dadurch, dass diese pendelnden Einzelholme Ć¼ber eine Drehachse verbunden sind und durch die Lenkergeometrie erfolgt ein automatisches Anlegen an die Kraftaufnahmepunkte der Gurtsysteme, wenn diese in die Unterlenkerfanghaken eingehƤngt werden. Die Lenkergeometrie vermittelt die Teilumwandlung der vertikalwirkenden Gewichtskraft in eine Horizontalkraft-Komponente. Dazu weist der Unterlenker-Fanghaken, befestigt am Axialrahmen ein kugeliges AufnahmestĆ¼ck auf, das bei Erhaltung der Freiheitsgrade der Bewegung in ein komplementƤr geformtes GegenstĆ¼ck der Unterlenkerkugeln am AufhƤngungsgelenk der Vertikalholme eingreift.The radial frame is preferably constructed as follows. The vertical spars consist of two parallel, vertically arranged, spar-like side parts that are connected to each other at the upper end by the axis of rotation of a swivel joint (pair of vertical spars). The swivel joint is preferably fastened by means of an axis of rotation with slide bearing and locknuts. The axis of rotation carries a suspension joint between the two spar-like side parts. The suspension joint has a lower link. The lower link has a lower link catch hook. The upper end of the vertical bars is attached to the axial frame using the lower link hook of the swivel joint. The fact that these oscillating individual bars are connected via an axis of rotation and the handlebar geometry means that they are automatically applied to the force absorption points of the belt systems when they are hooked into the lower link hooks. The handlebar geometry conveys the partial conversion of the vertical weight force into a horizontal force component. For this purpose, the lower link catch hook, attached to the axial frame, has a spherical receiving piece which, while maintaining the degrees of freedom of movement, engages in a complementarily shaped counterpart of the lower link balls on the suspension joint of the vertical bars.

Das untere Ende der vertikalen RahmenendstĆ¼cke wird in HohlrƤume eingesteckt, die aus dem unteren Axialrahmen, einem Verschlussteil und den unteren Gurten gebildet sind. Dazu weisen die Seitenteile an ihrem unteren Ende, vorzugsweise an den von dem Drehgelenk weg gerichteten Seiten, bevorzugt EinsteckflƤchen auf. Diese EinsteckflƤchen erleichtern das EinfĆ¼hren der Seitenteile in die HohlrƤume. Sie sind dazu vorzugsweise konisch geformt. Besonders bevorzugt weisen die EinsteckflƤchen Gleitbeschichtungen (bspw. Teflon) auf.The lower end of the vertical frame end pieces is inserted into cavities which are formed from the lower axial frame, a closure part and the lower belts. For this purpose, the side parts preferably have insertion surfaces at their lower end, preferably on the sides directed away from the swivel joint. These insertion surfaces facilitate the insertion of the side parts into the cavities. For this purpose, they are preferably conically shaped. The insertion surfaces particularly preferably have sliding coatings (for example Teflon).

Ober- und Untergurte sind bevorzugt als zwei parallel Ć¼bereinander verlaufende Gurte ausgefĆ¼hrt, die als Doppel-Gurte bezeichnet werden. Ein Gurtsystem kann auch jeweils einen Einzelgurt mit angeschweiƟtem, geschmiedetem Kopfteil aufweisen. Die Doppel-Gurte sind an ihren Kopfenden mit speziellen hammerkopfartigen SchweiƟkonstruktionen - den Kopfverbindungen - miteinander verbunden. Die Gurte verlaufen zwischen den zwei parallel verlaufenden Seitenteilen der Vertikalholme hindurch. Die Vertikalholme stĆ¼tzen sich in Richtung der Radialkraft an den Kopfteilen bzw. Kopfverbindungen der Gurte ab. An den von den Vertikalholmen weg gerichteten Enden weisen die Gurte ein elastisches DƤmpfungselement auf. Das DƤmpfungselement der Gurte wird um den Betrag (Weg) vorgespannt, der sich aus der durch die Betriebskraft resultierenden LƤngendehnung ergibt. Somit ist die um einen definierten Weg vorgespannte, elastische Lagerung der Gurte im Betrieb bei Nennkraft nahezu entlastet, d.h. entspannt.Upper and lower belts are preferably designed as two belts running parallel one above the other, which are referred to as double belts. A belt system can also each have a single belt with a welded-on, forged head part. The double belts are connected to each other at their head ends with special hammer head-like welded constructions - the head connections. The straps run between the two parallel side parts of the vertical bars. The vertical bars are supported in the direction of the radial force on the head parts or head connections of the belts. On those facing away from the vertical bars The ends of the straps have an elastic damping element. The damping element of the belts is pretensioned by the amount (distance) that results from the elongation caused by the operating force. Thus, the elastic mounting of the belts, which is pretensioned by a defined path, is almost relieved during operation at nominal force, ie relaxed.

Die aufwendige Scherbolzen-Schraubverbindung zwischen den Gurten und den Kraftaufnahmepunkten wird in dieser RahmenausfĆ¼hrung durch eine SchweiƟ- oder Schmiedeverbindung ersetzt und gehƶrt zum Gurtsystem. Der mechanische Verbund von Vertikalholm und Gurt kann so erheblich stabilisiert und die MomentenĆ¼bertragung verbessert werden.The elaborate shear bolt screw connection between the belts and the force absorption points is replaced in this frame version by a welded or forged connection and is part of the belt system. The mechanical bond between the vertical spar and the belt can thus be considerably stabilized and the torque transmission improved.

Vorteilhaft sind durch den erfindungsgemƤƟen Aufbau des Maschinenrahmens die Aufnahme der RadialkrƤfte und die Aufnahme der AxialkrƤfte weitestgehend getrennt, eine gegenseitige Beeinflussung wurde weitestgehend ausgeschlossen. Durch das DƤmpfungselement werden auch die im Betrieb auftretenden StĆ¶ĆŸe abgemildert. Zudem ist der Maschinenrahmen einfach aufgebaut und einzelne Teile des Rahmens sind einfach zu tauschen. Nicht zuletzt werden durch den Axialrahmen die gewichtsoptimierten Gurtsysteme parallel gehalten, HilfsstĆ¼tzen sind vorteilhaft nicht erforderlich.Due to the construction of the machine frame according to the invention, the absorption of the radial forces and the absorption of the axial forces are largely separated, and mutual interference has been largely ruled out. The damping element also mitigates the shocks that occur during operation. In addition, the machine frame is simple and individual parts of the frame are easy to replace. Last but not least, the weight-optimized belt systems are held parallel by the axial frame, auxiliary supports are advantageously not required.

Die Gurtsysteme nehmen keine GewichtskrƤfte aus den Rollen mit Lagerungen auf und weisen somit auch keine Gleitelemente fĆ¼r die Losrollenbewegung auf. Vorteilhaft sind die Gurte damit rein zugbelastetet durch die radialen KrƤfte und erlangen eine bauteilgerechte symmetrische Dehnung. Durch das Fehlen der Gleitelemente brauchen die Gurtsysteme nicht Ć¼ber die LƤnge maschinell gleitungsoptimiert bearbeitet zu werden und sind kostengĆ¼nstig zu fertigen.The belt systems do not absorb any weight from the rollers with bearings and therefore do not have any sliding elements for the loose roller movement. The straps are thus advantageously subjected to pure tensile loads due to the radial forces and achieve a symmetrical expansion appropriate to the component. Due to the absence of the sliding elements, the belt systems do not have to be machined to optimize their length and are inexpensive to manufacture.

In einer bevorzugten AusfĆ¼hrungsform des erfindungsgemƤƟen Maschinenrahmens weist der Axialrahmen ein Axialrahmenoberteil und ein Axialrahmenunterteil auf. Bevorzugt wird das Axialrahmenoberteil durch zwei u-fƶrmige Baugruppen gebildet, die parallel zu den Rotationsachsen der Rollen ausgerichtet sind. Die beiden u-fƶrmigen Baugruppen sind untereinander durch Strukturelemente verbunden. Das Axialrahmenunterteil ist ein rechteckiges Gebilde, das die Grundplatte des Axialrahmens bildet.In a preferred embodiment of the machine frame according to the invention, the axial frame has an upper axial frame part and an lower axial frame part. The upper axial frame part is preferably formed by two U-shaped assemblies which are aligned parallel to the axes of rotation of the rollers. The two U-shaped assemblies are interconnected by structural elements. The The lower part of the axial frame is a rectangular structure that forms the base plate of the axial frame.

In einer weiteren bevorzugten AusfĆ¼hrungsform des erfindungsgemƤƟen Maschinenrahmens weisen Axialrahmenoberteil und -unterteil Mittel zur gleitenden Bewegung der Rollen mit Lagerung, vorzugsweise Gleitbahnen, auf. Das Axialrahmenunterteil nimmt so zusƤtzlich zu den axial wirkenden BetriebskrƤften die Gewichtskraft der Rollen auf. Ein horizontales, reibungsarmes Gleiten der hydraulisch abgestĆ¼tzten Losrolle im Rahmen wird bevorzugt durch die Gleitpaarung Teflon / poliertes Chromblech erreicht. Vorzugsweise sind dabei polierte Chrombleche am Axialrahmenoberteil und -unterteil angeordnet; gekammerte Gleitplatten aus Teflon befinden sich als GleitgegenflƤche am LagergehƤuse. Die einzelnen Elemente dieser Gleitpaarung sind bevorzugt verschraubt und somit als VerschleiƟteil vorteilhaft in einfacher Weise auszutauschen.In a further preferred embodiment of the machine frame according to the invention, the upper and lower part of the axial frame have means for the sliding movement of the rollers with bearings, preferably slideways. The axial frame lower part thus absorbs the weight of the rollers in addition to the axially acting operating forces. Horizontal, low-friction sliding of the hydraulically supported idler roller in the frame is preferably achieved by the Teflon / polished chrome sheet pairing. Polished chrome sheets are preferably arranged on the upper and lower part of the axial frame; Chambered sliding plates made of Teflon are located on the bearing housing as a sliding counter surface. The individual elements of this pair of sliding elements are preferably screwed together and are therefore advantageously easy to replace as wearing parts.

Unter "gekammert" wird hier verstanden, dass die Gleitplatte aus Teflon in einer Vertiefung in einer TrƤgerplatte angeordnet ist, so dass die Vertiefung die Gleitplatte aus Teflon hƤlt, und die Randungen der Ɩffnung in der TrƤgerplatte die SchubkrƤfte aufnehmen. Die Verschraubung und / oder Verklebung der Gleitplatte muss dadurch lediglich die Fixierung der Gleitplatte in der TrƤgerplatte leisten.ā€œChamberedā€ is understood here to mean that the sliding plate made of Teflon is arranged in a recess in a carrier plate, so that the recess holds the sliding plate made of Teflon, and the edges of the opening in the carrier plate absorb the thrust forces. The screwing and / or gluing of the sliding plate therefore only has to fix the sliding plate in the carrier plate.

In einer weiteren bevorzugten AusfĆ¼hrungsform weisen Axialrahmenoberteil und -unterteil auƟen, parallel verlaufend zum Radialrahmen, Tragbleche mit Gleitschienen auf. An den GehƤusen der Rollenlager sind Gleit- und FĆ¼hrungselemente angeordnet, Ć¼ber die die Rollen verschiebbar auf den Tragblechen mit Gleitschienen gefĆ¼hrt werden, so dass sowohl die im Rollenpressen-Betrieb notwendige Bewegungsfreiheit der Losrolle gewƤhrleistet ist, als auch der Ein- und Ausbau der Rollen mƶglich ist. Dieses Gleit- und FĆ¼hrungssystem beinhaltet auch AuƟenfĆ¼hrungen, Ć¼ber die auftretende AxialkrƤfte in den Axialrahmen eingeleitet werden.In a further preferred embodiment, the upper and lower axial frame parts have support plates with slide rails on the outside, parallel to the radial frame. Sliding and guide elements are arranged on the housings of the roller bearings, by means of which the rollers are slidably guided on the support plates with slide rails, so that both the freedom of movement of the idler roller required in roller press operation is guaranteed, and the rollers can be installed and removed is. This sliding and guiding system also includes external guides, via which axial forces are introduced into the axial frame.

In einer weiteren bevorzugten AusfĆ¼hrungsform des erfindungsgemƤƟen Maschinenrahmens ist mindestens eines der Vertikalholmpaare des Radialrahmens lƶsbar. Vorteilhaft kƶnnen so die Vertikalholme zum Ausbau der Rollen schnell entfernt werden.In a further preferred embodiment of the machine frame according to the invention, at least one of the vertical beam pairs of the radial frame is solvable. The vertical bars for removing the rollers can advantageously be removed quickly.

In einer weiteren bevorzugten AusfĆ¼hrungsform des erfindungsgemƤƟen Maschinenrahmens werden in den Radialrahmen in horizontaler Richtung die LagergehƤuse beider Rollen abgestĆ¼tzt. Dazu weist eines der beiden Vertikalholmpaare eines Radialrahmens eine Anlage fĆ¼r die Lagerung einer Losrolle und der andere eine Anlage fĆ¼r die Lagerung einer Festrolle auf. In bevorzugter Weise erfolgt die AbstĆ¼tzung auf der Festrollenseite Ć¼ber ein Gummidrucklager und auf der Losrollenseite Ć¼ber ein Gummidrucklager und Hydraulikzylinder.In a further preferred embodiment of the machine frame according to the invention, the bearing housings of both rollers are supported in the radial frame in the horizontal direction. For this purpose, one of the two vertical beam pairs of a radial frame has a system for the storage of a loose roller and the other has a system for the storage of a fixed roller. The support is preferably provided on the fixed roller side via a rubber pressure bearing and on the idler roller side via a rubber pressure bearing and hydraulic cylinder.

In einer weiteren bevorzugten AusfĆ¼hrungsform der Erfindung befindet sich unter dem Maschinenrahmen ein Fundamentrahmen. Dieser Fundamentrahmen kann die bodennahen TrƤger der Einzelrahmen bilden. Der Fundamentrahmen ist bevorzugt mittels SchweiƟverbindungen hergestellt. Vorzugsweise kƶnnen Axial- und Radialrahmenteile am Fundamentrahmen mittels Schraubverbindungen befestigt werden. Der separate, einfach auszurichtende Fundamentrahmen bietet vorteilhaft eine Plattform, die ein einfaches und schnelles Aufbauen der Antriebs- und Rahmenteile einer Rollenpresse ermƶglicht.In a further preferred embodiment of the invention, a foundation frame is located under the machine frame. This foundation frame can form the near-ground beams of the individual frames. The foundation frame is preferably made by means of welded connections. Axial and radial frame parts can preferably be fastened to the foundation frame by means of screw connections. The separate, easy-to-align foundation frame advantageously offers a platform that enables the drive and frame parts of a roller press to be assembled quickly and easily.

In einer weiteren bevorzugten AusfĆ¼hrungsform sind Axialrahmen und Radialrahmen jeweils Ć¼ber das Gurtsystem des Radialrahmens miteinander verschraubt. Neben den oben beschriebenen Gurten umfasst ein Gurtsystem kastenfƶrmige Rahmenelemente. Diese weisen bevorzugt parallele LƤngstrƤgerelemente auf, zwischen denen die Gurte verlaufen. Die LƤngstrƤgerelemente werden mit Axialrahmenober- und -unterteil verschraubt, wobei durch die elastische Lagerung der Gurte in den kastenfƶrmigen Rahmenelementen die radialen BetriebskrƤfte erfindungsgemƤƟ nicht Ć¼ber die Verschraubung an die Axialrahmenelemente geleitet werden. Des Weiteren sind die kastenfƶrmigen Rahmenelemente eines Gurtsystems und der Axialrahmen durch einen vertikalen Bolzen als Zentrier-Steckverbindung miteinander verbunden. Aufgrund der Schraubverbindungen ist der Maschinenrahmen einfach zu montieren und zu demontieren, und auch Reparaturarbeiten sind einfacher als bei einem mehrteilig aus horizontalen und vertikalen Rahmenbauteilen zusammen geschweiƟten Rahmen.In a further preferred embodiment, the axial frame and the radial frame are each screwed together via the belt system of the radial frame. In addition to the straps described above, a strap system includes box-shaped frame elements. These preferably have parallel longitudinal beam elements, between which the belts run. The longitudinal beam elements are screwed to the upper and lower part of the axial frame, the radial operating forces not being passed through the screw connection to the axial frame elements according to the invention due to the elastic mounting of the belts in the box-shaped frame elements. Furthermore, the box-shaped frame elements of a belt system and the axial frame are connected to one another by a vertical bolt as a centering plug connection. Due to the screw connections, the machine frame is easy to assemble and disassemble, and repair work is also easier than with a frame that is welded together from horizontal and vertical frame components.

In einer weiteren bevorzugten AusfĆ¼hrungsform sind die Radialrahmen kleiner ausgebildet als die Axialrahmen, so dass im zusammengebauten Zustand die Radialrahmen innerhalb des Axialrahmens liegen. Das bedeutet gleichsam, dass die Rollen in einer Richtung orthogonal zu ihrer Rotationsachse durch den Axialrahmen passen. Vorteilhaft wird so der Ausbau der Rollen weiter vereinfacht, da der Axialrahmen nicht entfernt werden muss.In a further preferred embodiment, the radial frames are designed to be smaller than the axial frames, so that in the assembled state the radial frames lie within the axial frame. This means that the rollers fit through the axial frame in a direction orthogonal to their axis of rotation. This advantageously simplifies the removal of the rollers, since the axial frame does not have to be removed.

Vorteilhaft ermƶglicht der erfindungsgemƤƟe, sogenannte Kreuzrahmen die klare Trennung der KrƤfte in die dafĆ¼r vorgesehenen Rahmenbauteile, d.h. der Axialrahmen nimmt die axialen und die Radialrahmen die radialen KrƤfte auf. Zudem mĆ¼ssen durch die Gestaltung der Rollenaufnahmen die Radialrahmen keine GewichtskrƤfte der Rollen mehr aufnehmen, es wirken somit keine Biegemomente, sondern weitestgehend nur ZugkrƤfte auf die Radialrahmen. Dadurch, dass der Axialrahmen nicht fĆ¼r die Aufnahme der radialen BetriebskrƤfte ausgelegt werden muss, kann der Axialrahmen deutlich leichter ausgefĆ¼hrt werden als bei bekannten Rahmenformen, und es ergibt sich eine Gewichtsreduzierung.The so-called cross frame according to the invention advantageously enables the forces to be clearly separated into the frame components provided for this purpose, i.e. the axial frame absorbs the axial and the radial frame the radial forces. In addition, due to the design of the roller mounts, the radial frames no longer have to absorb the weight of the rollers, so there are no bending moments, but largely only tensile forces on the radial frames. Because the axial frame does not have to be designed to absorb the radial operating forces, the axial frame can be made significantly lighter than in the case of known frame shapes, and the weight is reduced.

Weiterhin vorteilhaft sind aufgrund der beiden groƟen Axialrahmen, durch die die Rollen hindurchfĆ¼hrbar sind, die Rollen sehr einfach und bevorzugt in Richtung der Festrolle ausbaubar. Weiterhin bevorzugt ist ein Ausbau auch in Richtung der Losrolle mƶglich.Furthermore, due to the two large axial frames through which the rollers can be guided, the rollers can be removed very easily and preferably in the direction of the fixed roller. An expansion in the direction of the loose roll is also preferably possible.

Zudem ist der Aufbau des Rahmens als Baukastensystem sehr vorteilhaft, da verschiedene Rahmenbauteile fĆ¼r Rollenpressen verschiedener GrĆ¶ĆŸe einsetzbar sind.In addition, the construction of the frame as a modular system is very advantageous, since different frame components can be used for roller presses of different sizes.

Die Erfindung wird nachstehend anhand von AusfĆ¼hrungsbeispielen unter Bezugnahme auf die Abbildungen erlƤutert, ohne auf diese beschrƤnkt zu sein.The invention is explained below using exemplary embodiments with reference to the figures, without being limited to these.

FĆ¼r die Realisierung der Erfindung ist es auch zweckmƤƟig, die vorgenannten Ausgestaltungen und AusfĆ¼hrungsformen miteinander zu kombinieren. Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Kombinationen der AnsprĆ¼che oder einzelner Merkmale davon.To implement the invention, it is also expedient to combine the above-mentioned configurations and embodiments with one another. Preferred developments of the invention result from the combinations of the claims or individual features thereof.

Dabei zeigen:

Figur 1
eine Darstellung des Aufbaus eines erfindungsgemƤƟen Maschinenrahmens aus Einzelrahmen, ohne die Rollen,
Figur 2
eine Ansicht einer HƤlfte eines erfindungsgemƤƟen Maschinenrahmens, mit Rollen,
Figur 3
eine Detailansicht des unteren Gurtsystems eines erfindungsgemƤƟen Maschinenrahmens, und
Figur 4
den Ausschnitt einer Seitenansicht der Festlagerseite des erfindungsgemƤƟen Maschinenrahmens.
Show:
Figure 1
a representation of the construction of a machine frame according to the invention from individual frames, without the roles,
Figure 2
a view of half of a machine frame according to the invention, with rollers,
Figure 3
a detailed view of the lower belt system of a machine frame according to the invention, and
Figure 4
the section of a side view of the fixed bearing side of the machine frame according to the invention.

Figur 1 zeigt den Aufbau eines erfindungsgemƤƟen Maschinenrahmens 1 fĆ¼r eine Rollenpresse. Dieser Maschinenrahmen 1 hat einen Axialrahmen 2 mit einem Axialrahmenoberteil 21 und einem Axialrahmenunterteil 22. Senkrecht dazu und innerhalb des Axialrahmens 2 sind zwei Radialrahmen 3 angeordnet. Bodennah befindet sich unter dem Axialrahmenunterteil 22 ein Fundamentrahmen 4. Die Radialrahmen haben jeweils ein oberes Gurtsystem 32 mit als Doppel-Gurt ausgefĆ¼hrtem Obergurt 321 und ein unteres Gurtsystem 31 mit als Doppel-Gurt ausgefĆ¼hrtem Untergurt 311. Oberes und unteres Gurtsystem sind baugleich. Die Kurzseiten der Radialrahmen 3 bilden Vertikalholme, die jeweils als ein Vertikalholmpaar 33 angeordnet sind. Parallel zu den Gurtsystemen 31, 32 sind Tragbleche mit Gleitschienen 23 am Axialrahmenoberteil 21 und am Axialrahmenunterteil 22 angebracht. Die starren Bauteile der AuƟenfĆ¼hrungen 24 sind ebenfalls am Axialrahmenoberteil 21 und am Axialrahmenunterteil 22 befestigt sind. Am Axialrahmenunterteil 22 angedeutet ist die Einhausung 6 der Rollen, die verhindert, dass Zerkleinerungsgut im Betrieb aus dem Rollenspalt nach auƟen dringt. Das obere Gurtsystem 32 ist mit dem Axialrahmenoberteil 21 und das untere Gurtsystem 31 mit dem Axialrahmenunterteil 22 Ć¼ber Schraubverbindungen (Befestigungslƶcher sind angedeutet) sowie jeweils einen Zentrierbolzen 81 (am Radialrahmen, unten verdeckt) mit Gegenloch 82 (am Axialrahmen, oben verdeckt) verbunden. Figure 1 shows the structure of a machine frame 1 according to the invention for a roller press. This machine frame 1 has an axial frame 2 with an axial frame upper part 21 and an axial frame lower part 22. Perpendicular to it and within the axial frame 2, two radial frames 3 are arranged. There is a foundation frame 4 near the bottom under the axial frame lower part 22. The radial frames each have an upper belt system 32 with an upper belt 321 designed as a double belt and a lower belt system 31 with a lower belt 311 designed as a double belt. Upper and lower belt systems are identical. The short sides of the radial frame 3 form vertical bars, which are each arranged as a vertical bar pair 33. Parallel to the belt systems 31, 32, support plates with slide rails 23 are attached to the upper axial frame part 21 and to the lower axial frame part 22. The rigid components of the outer guides 24 are also fastened to the upper axial frame part 21 and to the lower axial frame part 22. Indicated on the lower axial frame part 22 is the housing 6 of the rollers, which prevents comminuted material from escaping from the roller gap during operation. The upper belt system 32 is connected to the upper axial frame part 21 and the lower belt system 31 to the lower axial frame part 22 via screw connections (fastening holes are indicated) and a centering bolt 81 (on the radial frame, concealed below) with counter hole 82 (on the axial frame, concealed above).

Figur 2 zeigt eine Ansicht einer HƤlfte eines erfindungsgemƤƟen Maschinenrahmens 1. Dargestellt sind jeweils eine HƤlfte des Axialrahmens 2 mit Axialrahmenoberteil 21 und des Axialrahmenunterteil 22 sowie ein Radialrahmen 3, bestehend aus dem unteren Gurtsystem 31 mit Untergurt 311, dem oberen Gurtsystem 32 mit Obergurt 321 und zwei Vertikalholmpaaren 33. Ein Gurtsystem 31, 32 besteht aus, hier als parallel laufende Doppel-Gurte ausgefĆ¼hrten, Gurten 311, 321 und kastenrahmenfƶrmigen Halterungen, die LƤngstrƤgerelemente 37 aufweisen. In die AbstƤnde zwischen den Gurten 311, 321 und den LƤngstrƤgerelementen 37 greifen jeweils die Einzelholme eines Vertikalholmpaars 33 ein. Die Gurte 311, 321 weisen an den jeweiligen Enden spezielle SchweiƟkonstruktionen bzw. geschmiedete Kopfverbindungen 38 auf. Die Gurte sind in elastischen DƤmpfungselementen 36 im Gurtsystem gelagert. Fest- und Losrolle einer Rollenpresse weisen Ć¼blicherweise jeweils ein Festlager und ein Loslager auf. Gezeigt ist die festlagerseitige Ansicht des Maschinenrahmens mit dem Festlager der Losrolle 51 und dem Festlager der Festrolle 52, jeweils mit LagergehƤusen. Beide Rollen werden im Radialrahmen 3 horizontal abgestĆ¼tzt. Zu sehen ist die Anlage fĆ¼r das Losrollenlager 51 in Form eines Gummidrucklagers mit Hydraulikzylinder 34, der am Vertikalholmpaar 33 befestigt ist. Die festrollenseitige Anlage in Form eines Gummidrucklagers ist in der Abbildung verdeckt. Im Rahmen einer Kraftregelung stellen die Hydraulikelemente auf Losrollenseite das SpaltmaƟ zwischen Los- und Festrolle wƤhrend des Betriebes ein (Betriebsspalt). An den GehƤusen der Festlager 51, 52 sind GleitfĆ¼hrungen 25 angebracht, die die Gewichtskraft einer Rolle um die Gurtsysteme 31, 32 herum in das Axialrahmenunterteil 22 leiten. An den GleitfĆ¼hrungen 25 sind oben und unten gekammerte Gleitplatten 251, vorzugsweise aus Teflon, angeordnet (siehe Figur 4). Als GleitgegenflƤche sind am Axialrahmenoberteil 21 und am Axialrahmenunterteil 22 Tragbleche mit Gleitschienen 23, vorzugsweise aus polierten Chromblechen, befestigt. Die AuƟenfĆ¼hrung 24 weist sowohl starre, am Axialrahmenoberteil 21 oder -unterteil 22 befestigte, Elemente 241 sowie bewegliche, an den GleitfĆ¼hrungen 25 befestigte Elemente 242 auf (siehe Figur 4), so dass die horizontale Bewegung und Schiefstellung der Losrolle ermƶglicht wird. Die AuƟenfĆ¼hrungen 24 halten die Rollen axial in Position und leiten die axialen KrƤfte in den Axialrahmen 2. Die AuƟenfĆ¼hrungen 24 sind ebenfalls vorzugweise mit der Gleitpaarung Teflon / poliertes Chromblech ausgestattet. Figure 2 shows a view of one half of a machine frame 1 according to the invention. In each case one half of the axial frame 2 with the upper axial frame part 21 and the lower axial frame part 22 and a radial frame 3, consisting of the lower belt system 31 with lower belt 311, the upper belt system 32 with upper belt 321 and two vertical bar pairs, are shown 33. A belt system 31, 32 consists of belts 311, 321 and box-frame-shaped, here designed as parallel double belts Brackets which have longitudinal beam elements 37. The individual bars of a pair of vertical bars 33 each engage in the distances between the belts 311, 321 and the longitudinal beam elements 37. The straps 311, 321 have special welded constructions or forged head connections 38 at the respective ends. The belts are mounted in elastic damping elements 36 in the belt system. Fixed and loose rollers of a roller press usually have a fixed bearing and a floating bearing. Shown is the view of the machine frame on the fixed bearing with the fixed bearing of the idler roller 51 and the fixed bearing of the fixed roller 52, each with bearing housings. Both rollers are supported horizontally in the radial frame 3. The system for the loose roller bearing 51 can be seen in the form of a rubber pressure bearing with a hydraulic cylinder 34 which is fastened to the pair of vertical bars 33. The fixed-roller system in the form of a rubber pressure bearing is hidden in the illustration. As part of a force control, the hydraulic elements on the idler roller side set the gap between the idler and fixed rollers during operation (operating gap). Slideways 25 are attached to the housings of the fixed bearings 51, 52 and guide the weight of a roller around the belt systems 31, 32 into the lower axial part 22. Chambered sliding plates 251, preferably made of Teflon, are arranged on the sliding guides 25 (see Figure 4 ). Carrier plates with slide rails 23, preferably made of polished chrome plates, are fastened to the upper axial frame part 21 and to the lower axial frame part 22 as a sliding counter surface. The outer guide 24 has both rigid elements 241 fastened to the upper axial frame part 21 or lower part 22 and movable elements 242 fastened to the sliding guides 25 (see Figure 4 ), so that the horizontal movement and inclination of the idler roller is made possible. The outer guides 24 hold the rollers axially in position and guide the axial forces into the axial frame 2. The outer guides 24 are also preferably equipped with the Teflon / polished chrome sheet sliding pair.

Figur 3 zeigt eine Detailansicht des unteren Gurtsystems 31 eines erfindungsgemƤƟen Maschinenrahmens 1, umfassend die mittels der SchweiƟkonstruktion 38 (Kopfverbindung) verbundenen, als parallel verlaufende Doppel-Gurte ausgefĆ¼hrten Untergurte 311 und die LƤngstrƤgerelemente 37 als Halterung der Gurte 311. Die LƤngstrƤgerelemente 37 sind Ć¼ber Schraubverbindungen (Befestigungslƶcher 39) und einen Zentrierbolzen 81 mit Gegenloch 82 (siehe Figur 1) mit dem Axialrahmenunterteil 22 verbunden. Die beiden Einzelholme des Vertikalholmpaars 33 sind zwischen den Gurten 311 und den LƤngstrƤgerelementen 37 eingesteckt. Das Vertikalholmpaar 33 nimmt die radialen BetriebskrƤfte auf und leitet diese an die Gurte 311 weiter. Die Gurtkƶpfe mit den KraftanlageflƤchen 331 zur Einleitung der radialen KrƤfte von den Vertikalholmen 33 in die Gurte 311 weisen keine Schraub- oder Bolzenverbindungen auf. Die Gurte 311 sind elastisch Ć¼ber ein DƤmpfungselement 36 im Gurtsystem 31 gelagert. Dadurch werden die radialen BetriebskrƤfte nicht an die LƤngstrƤgerelemente 37 und somit auch nicht an das Axialrahmenunterteil 22 weitergegeben. Figure 3 shows a detailed view of the lower belt system 31 of a machine frame 1 according to the invention, comprising the lower chords 311 connected by means of the welded construction 38 (head connection) and designed as parallel double belts, and the longitudinal beam elements 37 as holders for the belts 311. The longitudinal beam elements 37 are screwed (fastening holes) 39) and a centering pin 81 with counter hole 82 (see Figure 1 ) with the lower part of the axial frame 22 connected. The two individual bars of the vertical bar pair 33 are inserted between the belts 311 and the longitudinal beam elements 37. The vertical beam pair 33 absorbs the radial operating forces and forwards them to the belts 311. The belt heads with the force contact surfaces 331 for introducing the radial forces from the vertical bars 33 into the belts 311 have no screw or bolt connections. The belts 311 are elastically supported in the belt system 31 via a damping element 36. As a result, the radial operating forces are not passed on to the longitudinal beam elements 37 and thus also not to the lower axial frame part 22.

Figur 4 zeigt eine Seitenansicht der Festlagerseite eines erfindungsgemƤƟen Maschinenrahmens 1, zur Verdeutlichung des Aufbaus der Rollenlagerung im Maschinenrahmen 1, durch die in vorteilhafter Weise die axialen KrƤfte nur in den Axialrahmen 2 eingeleitet werden. Dargestellt ist ein TeilstĆ¼ck einer Rolle, hier der Festrolle 5, ein TeilstĆ¼ck des Axialrahmenoberteils 21 und des Axialrahmenunterteils 22 sowie unteres Gurtsystem 31, oberes Gurtsystem 32 und ein Vertikalholmpaar 33 des festlagerseitigen Radialrahmens. Am LagergehƤuse des Festlagers 52 sind GleitfĆ¼hrungen 25 angebracht, die an ihrem oberen und unteren Ende gekammerte Gleitplatten 251, vorzugsweise aus Teflon, aufweisen. Die auƟen liegenden Gleitplatten 251, bei denen es sich um VerschleiƟteile handelt, kƶnnen in vorteilhafter Weise ausgebaut werden, ohne die Rollen mit Lagerung aus dem Rahmen ausbauen zu mĆ¼ssen. Als GleitgegenstĆ¼ck sind am Axialrahmenoberteil 21 und -unterteil 22 Tragbleche mit Gleitschienen 23, vorzugsweise polierte Chrombleche, angebracht, vorzugsweise mit HeftschweiƟungen und / oder Schrauben. Die starren Bauteile 241 der AuƟenfĆ¼hrungen 24 sind am Axialrahmenoberteil 21 und -unterteil 22 befestigt. Die beweglichen Bauteile 242 der AuƟenfĆ¼hrungen 24 sind an den GleitfĆ¼hrungen 25 angebracht. Die GleitfĆ¼hrungen 25 dienen, verbunden mit einer nicht dargestellten Traverse, gleichfalls als Anschlagmittel fĆ¼r den Transport und zum Heben der Rollen. Bezugszeichen 1 Maschinenrahmen 2 Axialrahmen 21 Axialrahmenoberteil 22 Axialrahmenunterteil 23 Tragblech mit Gleitschiene 24 AuƟenfĆ¼hrung 241 Starre AuƟenfĆ¼hrungsbauteile 242 Bewegliche AuƟenfĆ¼hrungsbauteile 25 GleitfĆ¼hrung 251 Gleitplatte 3 Radialrahmen 31 Unteres Gurtsystem 311 Untergurt 32 Oberes Gurtsystem 321 Obergurt 33 Vertikalholmpaar 331 Anlage der Vertikalholme 34 Hydraulikzylinder mit Gummidrucklager, als Anlage der Losrolle 36 Elastisches DƤmpfungselement 37 LƤngstrƤgerelement des Gurtsystems 38 Kopfverbindung 39 Befestigungslƶcher 4 Fundamentrahmen 5 Festrolle 51 Festlager der Losrolle 52 Festlager der Festrolle 6 Einhausung (angedeutet) 81 Zentrierbolzen 82 Loch fĆ¼r Zentrierbolzen Figure 4 shows a side view of the fixed bearing side of a machine frame 1 according to the invention, to illustrate the structure of the roller bearing in the machine frame 1, through which the axial forces are advantageously introduced only in the axial frame 2. Shown is a section of a roller, here the fixed roller 5, a section of the upper axial frame part 21 and the lower axial frame part 22 as well as the lower belt system 31, upper belt system 32 and a vertical spar pair 33 of the radial frame on the fixed bearing side. Slideways 25 are attached to the bearing housing of the fixed bearing 52 and have chambered sliding plates 251, preferably made of Teflon, at their upper and lower ends. The outer sliding plates 251, which are wear parts, can be removed in an advantageous manner without having to remove the rollers with bearings from the frame. Carrier plates with slide rails 23, preferably polished chrome plates, are attached to the axial frame upper part 21 and lower part 22 as a sliding counterpart, preferably with tack welds and / or screws. The rigid components 241 of the outer guides 24 are fastened to the axial frame upper part 21 and lower part 22. The movable components 242 of the outer guides 24 are attached to the sliding guides 25. The slide guides 25, connected to a crossbeam, not shown, also serve as stop means for transporting and lifting the rollers. <B> reference numerals </ b> 1 machine frame 2 Axialrahmen 21 Axialrahmenoberteil 22 Axialrahmenunterteil 23 Support plate with slide rail 24 external guide 241 Rigid external guide components 242 Movable external guide components 25 slide 251 sliding plate 3 radial frame 31 Lower belt system 311 lower chord 32 Upper belt system 321 upper chord 33 Vertical beam pair 331 Installation of the vertical bars 34 Hydraulic cylinder with rubber pressure bearing, as a system for the loose roller 36 Elastic damping element 37 Side member of the belt system 38 head connection 39 mounting holes 4 foundation frame 5 fixed role 51 Fixed bearing of the loose roller 52 Fixed bearing of the fixed role 6 Enclosure (indicated) 81 centering 82 Hole for centering pin

Claims (9)

  1. Machine frame (1) for a roller press, comprising an axial frame (2) for absorbing axial forces generated during operation and at least two radial frames (3) for absorbing radial forces generated during operation, the elements (36) of the radial frame (3) which absorb the radial forces being elastically mounted in the machine frame (1), characterised in that the long sides of the radial frame (3) comprise a belt system (31, 32) which has at least one upper belt (321) or one lower belt (311), and the short sides of the radial frame comprise vertical struts (33) which are arranged in pairs, the radial forces being directed to the belts (311, 321) of the belt system (31, 32) via the vertical struts (33), and the belts (311, 321) of the belt system (31, 32) being elastically mounted in elastic damping elements (36).
  2. Machine frame (1) according to claim 1, characterised in that the axial frame (2) has an upper axial frame part (21) and a lower axial frame part (22).
  3. Machine frame (1) according to claim 2, characterised in that the machine frame (1) has means for a sliding movement of the rollers with bearings (51, 52).
  4. Machine frame (1) according to claim 3, characterised in that the means for the sliding movement of the rollers are support plates having slide rails (23), which plates are arranged on the axial frame (2) in parallel with the radial frame (3) and which, together with the slide and guide elements (24, 25) fastened to the rollers with bearings (51, 52), form a system in which the rollers with bearings (51, 52) are slidably guided.
  5. Machine frame (1) according to any of claims 1 to 4, characterised in that at least one of the two vertical strut pairs (33) of a radial frame (3) is detachable.
  6. Machine frame (1) according to either claim 1 or claim 5, characterised in that, of the two vertical strut pairs (33) of a radial frame (3), one has an abutment for a movable roller (34) and the other has an abutment for a fixed roller.
  7. Machine frame (1) according to any of claims 1 to 6, characterised in that the ground-level support of the individual frames (2, 3) is formed by a foundation frame (4).
  8. Machine frame (1) according to any of claims 1 to 7, characterised in that the axial frame (2) and the radial frames (3) are connected by screw or centring pin connections (81, 82).
  9. Machine frame (1) according to any of claims 1 to 8, characterised in that the axial frame (2) is designed to be larger than the radial frames (3), such that the radial frames (3) lie within the axial frame (2).
EP15194199.4A 2014-11-18 2015-11-12 Machine frame for a roller press Active EP3037250B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014223524.3A DE102014223524A1 (en) 2014-11-18 2014-11-18 Machine frame for a roller press

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EP3037250A2 EP3037250A2 (en) 2016-06-29
EP3037250A3 EP3037250A3 (en) 2016-08-17
EP3037250B1 true EP3037250B1 (en) 2020-02-19

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US (1) US10065192B2 (en)
EP (1) EP3037250B1 (en)
AU (1) AU2015258205B2 (en)
CA (1) CA2912492C (en)
CL (1) CL2015003380A1 (en)
DE (1) DE102014223524A1 (en)
MX (1) MX364404B (en)
PE (1) PE20160342A1 (en)

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GB2607620B (en) * 2021-06-09 2023-06-07 Weir Minerals Netherlands Bv High pressure grinding roll module

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CA2912492C (en) 2017-09-05
AU2015258205A1 (en) 2016-06-02
EP3037250A3 (en) 2016-08-17
EP3037250A2 (en) 2016-06-29
MX2015015780A (en) 2016-06-07
MX364404B (en) 2019-04-24
DE102014223524A1 (en) 2016-05-19
US10065192B2 (en) 2018-09-04
CA2912492A1 (en) 2016-05-18
PE20160342A1 (en) 2016-04-30
AU2015258205B2 (en) 2016-09-15
US20160136649A1 (en) 2016-05-19
CL2015003380A1 (en) 2016-09-30

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