EP3866979A1 - Hebelsystem zur kraftübertragung - Google Patents
Hebelsystem zur kraftübertragungInfo
- Publication number
- EP3866979A1 EP3866979A1 EP19717245.5A EP19717245A EP3866979A1 EP 3866979 A1 EP3866979 A1 EP 3866979A1 EP 19717245 A EP19717245 A EP 19717245A EP 3866979 A1 EP3866979 A1 EP 3866979A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lever
- hydraulic cylinder
- rocker arm
- grinding roller
- side lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/004—Shape or construction of rollers or balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/04—Mills with pressed pendularly-mounted rollers, e.g. spring pressed
Definitions
- the invention relates to a lever system for power transmission for a grinding roller according to the preamble of claim 1.
- Lever systems of this type are used in particular in roller mills or vertical mills for the comminution of ground material such as cement clinker or coal.
- FIGS. 6 and 7 An example of such lever systems 50 is also shown in FIGS. 6 and 7.
- the perspective side view according to FIG. 6 shows a conical grinding roller 51 which, during operation, rolls with its grinding surface on a grist to be ground to be ground and frictionally.
- a sufficiently known grinding table with the ground material conveyed on it is not shown in FIGS. 6, 7.
- the lever system 50 commonly used up to now has an upwardly projecting rocker arm fork 53 which is mounted on a rocker arm shaft 54 and is firmly connected to an L-shaped central rocker arm 52 during operation.
- the central rocking lever 52 takes on the axis of the grinding roller 51, which is mounted on the end facing the grinding table.
- the Schwinghe belgabel 53 which runs downwards and is slightly curved in the direction of the mill center, is connected at the lower end on both sides to a hydraulic cylinder 56, 57 via joint eyes 67.
- These hydraulic cylinders 56, 57 together with the pump units 63 and storage units 64 form the hydropneumatic Suspension system for the grinding roller 51.
- the hydraulic cylinders act with their piston rods and the connection via the joint eyes 67 with tensile forces on the Schwinghe bel 53 and thus on the grinding roller, with cracks and breaks in particular due to the forces occurring in the Rocker arm can occur.
- the known lever systems are integrated into mill stands 60 made of steel, so that in a vertical mill with four grinding rollers four Müh lenst sections 60 with corresponding lever systems 50 are arranged at the same distance around the grinding table of the vertical mill.
- the object of the invention is therefore to overcome the disadvantages of previous lever systems for grinding rollers while being more cost-effective and easy to assemble and maintain.
- this object is achieved by a lever system for transmitting force to a grinding roller by the features of claim 1.
- the side lever is easily decoupled and coupled from the central rocker arm.
- the lever system according to the invention can also be referred to as a rocker arm concept, since the side lever is subjected to a largely vertical or vertical force by means of the hydraulic cylinder.
- This also makes it possible to change in a relatively simple manner the grinding force which has a good effect on the grinding during operation and which consists of a combination of the weight of the grinding roller and the hydraulic force additionally generated by the hydraulic cylinder.
- the hydraulic cylinder is hereby preferably arranged on a concrete base of the mill base. This arrangement of the hydraulic cylinder with coupling to the side lever and the central rocker arm allows operation in the grinding mode as a pressure cylinder, in contrast to most conventional mills, in which the cylinder is pressurized on the piston rod side and thus works as a pull cylinder.
- the hydraulic cylinder Due to the loading of the lower, piston-side cylinder chamber of the hyd raulikzylinders in the grinding operation, the hydraulic cylinder can be built smaller and cheaper according to the ratios of the piston surface to the piston rod-side surface with this corresponding arrangement.
- the concept according to the invention also reduces the risk of failure of the entire mill due to damage to the named assemblies.
- the off-center arrangement of the side lever has to take into account an uneven load on the two bearings of the rocker arm axis in the bearing block, this irregularity is compensated according to the invention in that the bearing on the side of the side lever is designed to be larger than the bearing opposite the side lever can be carried out in particular in smaller cost cheaper dimensions than the direct bearing for the Be tenhebel. Both bearings are preferably designed as roller bearings.
- the lever system according to the invention and the local arrangement of essential assemblies, such as hydraulic cylinders, side levers and pump and storage units to each other, also aims to implement a simplified design of an entire mill by assigning its own lever and hydraulic system to each individual roller module , so that complex pipeline connections between opposing grinding rollers can be avoided.
- a compensation of the roller forces of opposing grinding rollers during operation of a roller mill and the achievement of an almost even load of plain bearings, in particular the axial plain bearing, of the gear placed below a grinding table of a mill, is achieved in the present concept by means of an electronic Regulation of the roller forces carried out so that the mill suspension of each individual roller module can be quickly electronically regulated.
- the lever system according to the invention is also designed in such a way that the grinding roller can be pivoted out relatively easily from an operating position in the area of the grinding path into a largely vertical, upwardly tilted position.
- a separate unit with hydraulic cylinder and piston rod is arranged on the Be clay base in the side area of the central rocker arm free from the side lever.
- a hydraulic cylinder with a longer piston rod is provided, the upper end of which is attached directly or indirectly to the central rocker arm, while the lower foot block of the hydraulic cylinder is articulated on the concrete base or a stepped somewhat deeper Be rich.
- the side lever is expediently designed in a triangular shape or L-shape, with its longer leg being in force coupling with the hydraulic cylinder and being oriented approximately parallel to the roller axis.
- an approximately parallel arrangement is also to be understood as an angle of 10 ° to 15 ° between the longer L-leg and the longitudinal axis of the roller axis.
- the off-center arrangement of the side lever and the corresponding hydraulic cylinder enables better accessibility for the coupling of a separate swivel hydraulic cylinder for swiveling out the grinding roller and for maintenance work in this area.
- FIG. 1 shows a perspective view of a lever system from the outside in the direction of a grinding table of a roller mill, only a single module of a grinding roller with a lever system being shown;
- FIG. 2 shows the example of the lever system according to FIG. 1 in a lateral perspective
- Fig. 3 is a simplified sectional view along the line S-S of Fig. 1 in
- FIG. 4 shows the example according to FIG. 1 with an attached swivel hydraulic cylinder in a free area opposite the side lever;
- FIG. 5 shows the example according to FIG. 4 with an attached, swiveled-out grinding roller in a vertical position
- Fig. 6 shows the example of a lever system according to the prior art with a
- FIG. 7 shows the example of FIG. 6 according to the prior art in a perspective view from inside the housing of a roller mill to the outside.
- a lever system 1 is shown schematically in a perspective view in the direction of a corresponding grinding table.
- a conical grinding roller 3 which, during operation, rolls in a non-positive and frictional manner on the material to be ground, is guided with its roller axis 6 in a central rocking lever 10.
- the central rocker arm 10 is arranged on a rocker arm shaft 9 in a U-shaped bearing block 12, which is taken fastened on a stepped concrete base 25 in the example.
- a side lever 1 1 is firmly attached on the one hand via a flange-like attachment 14, the side lever 1 1 being mounted in the lower area on the rocker arm axis 9.
- the approximately triangular or L-shaped side lever 1 1 has with its longer leg of the L-shape in the opposite direction to the grinding roller 3 or its grinding roller axis 6.
- a fastening eye 18 is seen in the end of the lever arm 13 in front , on which a piston rod 16 of a hydraulic cylinder 15 with the side lever 1 1 is in engagement.
- the hydraulic cylinder 15 is fastened with a foot block 19 on the area of the base 24 of the concrete block.
- a pump unit assigned to the storage unit 17 is not shown in FIG. 1.
- FIG. 3 a sectional illustration corresponding to the line SS according to FIG. 1 is shown in a simplified and schematic manner.
- the corresponding bearing 21, which is preferably a roller bearing, is slightly larger than the bearing 22 provided on the right side, whereby the weight forces by means of both bearings 21, 22 the grinding roller 3, the roller axis 6 and the central rocker arm 10 including those of the side lever 1 1 on the rocker arm axis 9 and then transferred to the bearing block 12.
- FIG. 4 shows a perspective side view of the lever system 1 according to FIG. 1, in this figure a pivoting hydraulic cylinder 30 extending from a foot block 34 fastened on the concrete base 25 with its piston rod 31 to a head block 33.
- This head block 33 engages rotatively on a coupling plate 32 which is rigidly fixed on the central rocker arm 10.
- a free lateral area 27 ge create, in which a pivoting hydraulic cylinder 30 for pivoting the grinding roller 3 can be arranged relatively easily and quickly, the assembly and disassembly of these assemblies on the open concrete base 25 well handled can be because the integration of the entire lever system in a largely closed mill stand, as is conventionally the case, is not used.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2019/058516 WO2020200455A1 (de) | 2019-04-04 | 2019-04-04 | Hebelsystem zur kraftübertragung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3866979A1 true EP3866979A1 (de) | 2021-08-25 |
| EP3866979B1 EP3866979B1 (de) | 2022-08-03 |
Family
ID=66165925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19717245.5A Active EP3866979B1 (de) | 2019-04-04 | 2019-04-04 | Hebelsystem zur kraftübertragung |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US12011723B2 (de) |
| EP (1) | EP3866979B1 (de) |
| JP (1) | JP7379496B2 (de) |
| CN (1) | CN113631273B (de) |
| DK (1) | DK3866979T3 (de) |
| ES (1) | ES2929405T3 (de) |
| PH (1) | PH12021550890A1 (de) |
| WO (1) | WO2020200455A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118892887B (zh) * | 2024-07-11 | 2026-05-01 | 成都建筑材料工业设计研究院有限公司 | 一种可快速翻出摇臂装置 |
| WO2026092823A1 (de) | 2024-10-28 | 2026-05-07 | Loesche Gmbh | Wälzmühle und verfahren zum betreiben derselben |
Family Cites Families (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2112359A (en) * | 1936-06-29 | 1938-03-29 | Comb Eng Co Inc | Rotary bowl mill |
| US3591094A (en) * | 1969-02-20 | 1971-07-06 | Peter Gauer | Control system for roll grinders |
| DE2128929C3 (de) * | 1971-06-11 | 1974-06-27 | Loesche Hartzerkleinerungs- Und Zementmaschinen Kg, 4000 Duesseldorf | Walzenmühle |
| US3774854A (en) * | 1972-07-10 | 1973-11-27 | Loesche Kg | Breaker roll mill |
| JPS5222160A (en) | 1975-08-12 | 1977-02-19 | Ube Ind Ltd | Contact pressure adjusting device for powdering machine |
| DE2703535C2 (de) * | 1977-01-28 | 1986-07-10 | Loesche GmbH, 4000 Düsseldorf | Wälzmühle |
| DE2838782C3 (de) * | 1978-09-06 | 1982-01-14 | Loesche GmbH, 4000 Düsseldorf | Walzenschüsselmühle mit hydropneumatischer Federung der Mahlwalzen |
| US4620674A (en) | 1984-07-16 | 1986-11-04 | Fuller Company | Pneumatic actuated roller assembly for a roller mill |
| US4828189A (en) * | 1988-07-07 | 1989-05-09 | Fuller Company | Roller mill for comminuting solid materials |
| JPH02222160A (ja) | 1989-02-23 | 1990-09-04 | Nissan Motor Co Ltd | 半導体装置の製造方法 |
| US5244157A (en) * | 1989-07-04 | 1993-09-14 | Loesche Gmbh | Air flow rolling mill |
| JP2858682B2 (ja) * | 1991-09-10 | 1999-02-17 | 宇部興産株式会社 | 竪型粉砕機 |
| CN1086462A (zh) | 1993-06-16 | 1994-05-11 | 向学雷 | 辊盘式破碎机 |
| JPH0716483A (ja) * | 1993-07-02 | 1995-01-20 | Ube Ind Ltd | 竪型粉砕機 |
| DE19603655A1 (de) * | 1996-02-01 | 1997-08-07 | Loesche Gmbh | Wälzmühle |
| DE19839162B4 (de) | 1998-08-28 | 2011-11-10 | Bauermeister Verfahrenstechnik Gmbh | Verfahren zum Einstellen des Walzspaltes bei Zerkleinerungswalzwerken |
| EP1675683B1 (de) | 2003-09-12 | 2011-03-02 | Loesche GmbH | Verfahren zum Betreiben einer Wälzmühle und Verfahren zur Herstellung von Zement |
| DE102004062400B4 (de) | 2004-12-23 | 2006-10-26 | Loesche Gmbh | Wälzmühle in Modulbauweise |
| DE102006061506B4 (de) | 2006-12-15 | 2008-10-30 | Ing. Erich Pfeiffer Gmbh | Dosiervorrichtung |
| DE102006061328B4 (de) * | 2006-12-22 | 2014-01-16 | Gebr. Pfeiffer Ag | Wälzmühle |
| DE102007009723A1 (de) * | 2007-02-28 | 2008-09-04 | Polysius Ag | Rollenmühle |
| DE102008039542B4 (de) * | 2008-08-25 | 2010-04-15 | Polysius Ag | Rollenmühle |
| JP2011240275A (ja) | 2010-05-19 | 2011-12-01 | Mitsubishi Heavy Ind Ltd | 竪型ミル |
| CN102284322B (zh) * | 2011-08-16 | 2012-09-05 | 天津苏美尔环保投资有限公司 | 一种立式辊磨机 |
| JP2013066859A (ja) | 2011-09-22 | 2013-04-18 | Mitsubishi Heavy Ind Ltd | 竪型ミル |
| CN103084241B (zh) | 2013-02-26 | 2015-09-30 | 南京凯盛国际工程有限公司 | 一种新型立式辊磨机 |
| JP6453028B2 (ja) | 2014-10-10 | 2019-01-16 | 三菱日立パワーシステムズ株式会社 | 粉砕装置および粉砕装置の軸受用潤滑油置換方法 |
| US20160121335A1 (en) | 2014-10-31 | 2016-05-05 | Loesche Gmbh | Grinding roller |
| CN108698049B (zh) | 2016-02-08 | 2020-09-22 | 德国莱歇公司 | 研磨辊装置 |
| CN208177516U (zh) | 2018-03-16 | 2018-12-04 | 钟小村 | 一种改进型辊压机磨辊设置结构 |
-
2019
- 2019-04-04 DK DK19717245.5T patent/DK3866979T3/da active
- 2019-04-04 JP JP2021538817A patent/JP7379496B2/ja active Active
- 2019-04-04 CN CN201980079177.6A patent/CN113631273B/zh active Active
- 2019-04-04 EP EP19717245.5A patent/EP3866979B1/de active Active
- 2019-04-04 US US17/298,788 patent/US12011723B2/en active Active
- 2019-04-04 WO PCT/EP2019/058516 patent/WO2020200455A1/de not_active Ceased
- 2019-04-04 PH PH1/2021/550890A patent/PH12021550890A1/en unknown
- 2019-04-04 ES ES19717245T patent/ES2929405T3/es active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113631273B (zh) | 2022-10-21 |
| DK3866979T3 (da) | 2022-10-24 |
| US20220032311A1 (en) | 2022-02-03 |
| JP7379496B2 (ja) | 2023-11-14 |
| US12011723B2 (en) | 2024-06-18 |
| WO2020200455A1 (de) | 2020-10-08 |
| ES2929405T3 (es) | 2022-11-29 |
| PH12021550890A1 (en) | 2022-05-16 |
| EP3866979B1 (de) | 2022-08-03 |
| CN113631273A (zh) | 2021-11-09 |
| JP2022525494A (ja) | 2022-05-17 |
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