EP3037250B1 - Cadre de machine pour une presse à rouleaux - Google Patents

Cadre de machine pour une presse à rouleaux 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
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.)
Active
Application number
EP15194199.4A
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German (de)
English (en)
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EP3037250A3 (fr
EP3037250A2 (fr
Inventor
Meinhard Frangenberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Takraf GmbH
Original Assignee
MAN Takraf Fordertechnik GmbH
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Publication date
Application filed by MAN Takraf Fordertechnik GmbH filed Critical MAN Takraf Fordertechnik GmbH
Publication of EP3037250A2 publication Critical patent/EP3037250A2/fr
Publication of EP3037250A3 publication Critical patent/EP3037250A3/fr
Application granted granted Critical
Publication of EP3037250B1 publication Critical patent/EP3037250B1/fr
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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
    • B02C4/28—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.
  • “Chambered” 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)

Claims (9)

  1. Cadre de machine (1) pour une presse à rouleaux comportant un cadre axial (2) destiné à recevoir des forces axiales opérationnelles et au moins deux cadres radiaux (3) destinés à recevoir des forces radiales opérationnelles, dans lequel les éléments (36) du cadre radial (3) qui reçoivent les forces radiales sont montés de manière élastique dans le cadre de machine (1), caractérisé en ce que les côtés longitudinaux du cadre radial (3) comprennent un système de ceinture (31, 32) comprenant au moins une ceinture supérieure (321) ou une ceinture inférieure (311), et les côtés courts du cadre radial comprennent des montants verticaux (33) qui sont disposés par paires, dans lequel les forces radiales sont dirigées par les montants verticaux (33) vers les ceintures (311, 321) du système de ceinture (31, 32), et les ceintures (311, 321) du système de ceinture (31, 32) sont montées de manière élastique dans des éléments d'amortissement élastiques (36).
  2. Cadre de machine (1) selon la revendication 1, caractérisé en ce que le cadre axial (2) comporte une partie supérieure de cadre axial (21) et une partie inférieure de cadre axial (22).
  3. Cadre de machine (1) selon la revendication 2, caractérisé en ce que le cadre de machine (1) comporte des moyens destinés au mouvement de glissement des rouleaux avec des paliers (51, 52).
  4. Cadre de machine (1) selon la revendication 3, caractérisé en ce que les moyens destinés au mouvement de glissement des rouleaux sont des tôles de support à glissières (23) qui sont disposées sur le cadre axial (2) en s'étendant parallèlement au cadre radial (3), et qui forment, conjointement avec les éléments de glissement et de guidage (24, 25) fixés aux rouleaux avec les paliers (51, 52), un système dans lequel les rouleaux avec les paliers (51, 52) sont guidés de manière coulissante.
  5. Cadre de machine (1) selon l'une des revendications 1 à 4, caractérisé en ce qu'au moins l'une des deux paires de montants verticaux (33) d'un cadre radial (3) est amovible.
  6. Cadre de machine (1) selon l'une des revendications 1 ou 5, caractérisé en ce que l'une des deux paires de montants verticaux (33) d'un cadre radial (3) comporte une butée pour un rouleau fou (34) et l'autre comporte une butée pour un rouleau fixe.
  7. Cadre de machine (1) selon l'une des revendications 1 à 6, caractérisé en ce que le support se trouvant à proximité du fond du cadre unique (2, 3) est formé par un cadre de fondation (4).
  8. Cadre de machine (1) selon l'une des revendications 1 à 7, caractérisé en ce que le cadre axial (2) et le cadre radial (3) sont reliés par des assemblages par vis ou par boulons de centrage (81, 82).
  9. Cadre de machine (1) selon l'une des revendications 1 à 8, caractérisé en ce que le cadre axial (2) est plus grand que les cadres radiaux (3), de sorte que les cadres radiaux (3) se trouvent à l'intérieur du cadre axial (2).
EP15194199.4A 2014-11-18 2015-11-12 Cadre de machine pour une presse à rouleaux Active EP3037250B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014223524.3A DE102014223524A1 (de) 2014-11-18 2014-11-18 Maschinenrahmen für eine Rollenpresse

Publications (3)

Publication Number Publication Date
EP3037250A2 EP3037250A2 (fr) 2016-06-29
EP3037250A3 EP3037250A3 (fr) 2016-08-17
EP3037250B1 true EP3037250B1 (fr) 2020-02-19

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Application Number Title Priority Date Filing Date
EP15194199.4A Active EP3037250B1 (fr) 2014-11-18 2015-11-12 Cadre de machine pour une presse à rouleaux

Country Status (8)

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

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DE102015205713A1 (de) * 2015-03-30 2016-10-06 Takraf Gmbh Radialrahmen zur Aufnahme von radialen Mahlkräften
US10933422B2 (en) * 2018-06-19 2021-03-02 Ecomill, Llc Roller grain mill
DE102019119070B4 (de) * 2019-07-15 2023-05-25 Takraf Gmbh Maschinenrahmen für walzenpresse
GB2607620B (en) * 2021-06-09 2023-06-07 Weir Minerals Netherlands Bv High pressure grinding roll module

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Also Published As

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

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