WO2022078933A1 - Wheel arrangement for grate carriage of a sintering plant - Google Patents
Wheel arrangement for grate carriage of a sintering plant Download PDFInfo
- Publication number
- WO2022078933A1 WO2022078933A1 PCT/EP2021/078002 EP2021078002W WO2022078933A1 WO 2022078933 A1 WO2022078933 A1 WO 2022078933A1 EP 2021078002 W EP2021078002 W EP 2021078002W WO 2022078933 A1 WO2022078933 A1 WO 2022078933A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- arrangement
- bearing
- wheel
- inner ring
- outer ring
- Prior art date
Links
- 238000005245 sintering Methods 0.000 title abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 16
- 239000000314 lubricant Substances 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000011109 contamination Methods 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 5
- 239000004519 grease Substances 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000013590 bulk material Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000008247 solid mixture Substances 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/02—Adaptations of individual rollers and supports therefor
- B65G39/09—Arrangements of bearing or sealing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
- F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
- F16C19/385—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
- F16C19/386—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings in O-arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/12—Travelling or movable supports or containers for the charge
- F27D3/123—Furnace cars
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
- F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
- F16C19/388—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with four rows, i.e. four row tapered roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
- F16C19/547—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings
- F16C19/548—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings in O-arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/40—Application independent of particular apparatuses related to environment, i.e. operating conditions
- F16C2300/54—Application independent of particular apparatuses related to environment, i.e. operating conditions high-temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/02—Wheel hubs or castors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/10—Railway vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/58—Conveyor systems, e.g. rollers or bearings therefor
Definitions
- the present invention relates to a wheel arrangement for a grate carriage of a traveling grate of a sinter plant of a sinter plant according to the preamble of patent claim 1.
- a sintering plant is a large-scale plant in metallurgy and is used to produce pieces of fine-grained or fine-dust metallic, metal-oxide or metal-sulfide solid mixtures. The lumpy solid mixtures can then be used in a blast furnace.
- the material or sinter to be sintered is solidified by sintering, i.e. by heating to almost the melting point with surface softening and partial formation of melt and slag.
- the sintered material which in ore smelting can be, for example, fine ore, gravel burned off, blast dust or fine dust from a metalworking industry, is placed on a so-called traveling grate, possibly together with returned material, slag-forming additives or a solid fuel mixture.
- the traveling grate is usually designed as an endless row of individual grate cars to be filled.
- the grate wagons are filled with the bulk material and pass through various treatment stations in which the material is thermally treated, e.g. drying, firing and cooling.
- the grate car chain is moved by a lifting or drive wheel along an upper run through the treatment stations, with the running wheels of the grate cars being guided on rails.
- the heat-treated material is dropped on a lowering wheel (discharge station) by gravity onto a traveling grate of a cooling belt, whereupon the empty grate cars open returned upside down along a return run to the lift wheel.
- a contact pressure between the individual grate cars creates the necessary chain connection.
- Lifting and lowering wheel are designed as gears, the gears of the lifting and lowering wheel acting on so-called pressure rollers, which are arranged on the axis of the grate car next to the rollers in order to raise the grate car and promote it in the vertical direction.
- the downstream cooling belt is also designed as a traveling grate, which, however, is guided in a circular path, so that a pressure roller can be dispensed with.
- Running rollers and/or pressure rollers are mounted on a common axle or a common axle stub.
- a roller bearing is usually used for the bearing of the roller, while both a plain bearing and a simple roller bearing are used for the bearing of the pressure roller.
- the pressure roller can also be mounted only by means of a sleeve.
- the bearings for the roller and/or pressure roller are lubricated with grease.
- the lubricating grease can easily be introduced into the bearing interior via an access in a cover that closes off the roller bearing at the side.
- the pressure roller on the other hand, is supplied with lubricating grease via lubricating ducts that are provided as bores in the axle.
- a disadvantage of these configurations is that contamination also enters the bearing during relubrication, contaminating the bearing arrangements of the impeller and/or pressure roller and leading to damage and ultimately to failure of the bearing.
- the formation of the bore for the distribution of lubricant in the axis is complex and expensive.
- a wheel arrangement, in particular for a grate carriage of a traveling grate, of a sintering plant is proposed below.
- the grate carriage of the traveling grate also has at least one running wheel, which is designed to run on a rail, and an axle carrying the running wheel, in particular a stub axle.
- the impeller is mounted on the axle by means of a first roller bearing arrangement, the first roller bearing arrangement having an outer ring which is non-rotatably connected to the impeller and an inner ring which is non-rotatably connected to the axle.
- the outer ring and the inner ring define a bearing interior between them, in which rolling elements roll.
- the bearing arrangement be designed as a maintenance-free bearing unit.
- Bearing units of this type are equipped with a lubricating grease that is geared towards the service life of the bearing. A relubrication of such a bearing unit is not necessary. This, in turn, prevents contaminants from entering the bearing, increasing overall bearing life.
- maintenance-free bearing units have the further advantage that they are supplied and assembled as complete kits, so that retrofitting or maintenance of existing wheel assemblies is also possible without any problems.
- the wheel arrangement also has a pressure roller, which is designed to interact with a propulsion device, in particular a lifting and/or lowering wheel designed as a toothed wheel, for moving the grate carriage.
- a propulsion device in particular a lifting and/or lowering wheel designed as a toothed wheel, for moving the grate carriage.
- Raising and lowering wheels are used in the sinter plant to move the endless chain of the grate wagons to the upper and lower strands.
- the pressure roller is also mounted on the axle by means of a second roller bearing arrangement, the second roller bearing arrangement also having an outer ring and an inner ring which are non-rotatably connected to the pressure roller or non-rotatably to the axle.
- the outer ring and the inner ring define a bearing interior between them, in which the rolling elements roll.
- the second roller bearing arrangement is designed as a maintenance-free bearing unit.
- the bearing interior of the first and/or second roller bearing arrangement which is designed as a maintenance-free bearing unit, is filled with a lubricant.
- Sealing elements are arranged at the axial ends of the bearing unit between the inner ring and the outer ring, which prevent dirt and dirt from entering the bearing interior and the lubricant from being discharged from the bearing interior, so that the bearing unit is essentially completely closed off from the exterior.
- a lubricant is used that is designed for the life expectancy of the bearing, so that a change of lubricant or relubrication is not necessary over the entire service life of the bearing.
- the axially arranged seals ensure reliable sealing from the outside environment, so that no dirt can contaminate the interior of the bearing. Since the bearing is delivered and installed as a bearing unit, no contamination can get into the bearing interior, even during assembly or maintenance. This even enables assembly/disassembly directly at the sinter plant, which saves time and money.
- the first and/or second roller bearing arrangement is designed as a multi-row, preferably double-row, roller bearing arrangement. It is particularly preferred to design the first and/or second roller bearing arrangement as a double-row tapered roller bearing. Such bearings are known to be particularly stable and allow axial and radial loads.
- a double-row tapered roller bearing in an O arrangement, which has a two-part inner ring, has proven to be particularly preferred.
- the inner ring and/or the outer ring of the first and/or second roller bearing arrangement is designed in two parts, a gap between the two-part inner ring and/or outer ring is held together by means of a clamp element.
- This clamp element ensures that the divided bearing rings are not nanderfall, so that the roller bearing assembly is present as a storage unit even with a split bearing ring.
- the clip element allows the bearing ring parts to lie tightly against one another, so that the interior of the bearing is also sealed.
- the gap between the two-part inner ring and/or outer ring can also be sealed by means of a sealing element, which can also optionally enable the bearing rings to be fastened to one another.
- the seals which are arranged at both axial ends of the roller bearing arrangement between the outer ring and inner ring of the first and/or second roller bearing arrangement are so-called cartridge seals.
- Cassette seals or labyrinth seals provide a particularly good seal to an exterior, so that the interior of the bearing is completely sealed off.
- the housing parts of the cassette seal or labyrinth seal are firmly connected to the respective bearing ring, so that they cannot be damaged during transport and/or assembly.
- the "inner workings" of the cartridge seal or labyrinth seal i.e. the sealing lip(s) themselves, are completely sealed off by the housing so that no contamination can get into the seal or the interior of the bearing during assembly.
- a further aspect of the present invention relates to a grate carriage of a traveling grate of a sinter plant, the grate carriage having a wheel arrangement as discussed above.
- FIG. 1 shows a schematic sectional view through a wheel arrangement according to a first exemplary embodiment
- FIG. 1 and 2 each show a wheel arrangement 1 for a grate carriage (not shown) of a sintering plant (not shown).
- grate wagons are part of a traveling grate and form a grate wagon chain. They can be used at several points in a sintering plant and are filled with the bulk material and run through various treatment stations in which the material is thermally treated, for example drying, firing and cooling.
- the grate car chain is moved by a lifting or drive wheel along a so-called upper run through the treatment stations, with the grate car running on rails.
- the wheel arrangement 1 has a running wheel 2 for this purpose.
- the heat treated material is dropped by gravity onto a cooling belt at a drop wheel (drop station), whereupon the empty grate cars are returned, inverted, along a return run to the lift wheel.
- a contact pressure between the individual grate cars creates the necessary chain connection.
- the lifting and lowering wheel are designed as gears, the gears of the lifting and lowering wheel acting on so-called pressure rollers 4 of the wheel assembly 1 .
- the downstream cooling belt can also be designed as a traveling grate, which, however, is guided in a circular path, so that a pressure roller 4 can be dispensed with.
- the running wheels 2 and the pressure rollers 4 are arranged next to one another on an axle 6 which, in the exemplary embodiment in FIGS. 1 and 2, is designed as a stub axle.
- the grate car usually has have four wheel assemblies 1 and four stub axles.
- the axis 6 can also be designed to be continuous and then carries a running wheel 2 and a pressure roller 4 at each of its axial ends.
- the axle 6 is designed as a stepped axle with a first axle part 6a and a second axle part 6b.
- the first axle part 6a is designed to carry the running wheel 2
- the axle part 6b is designed to carry the pressure roller 4.
- the part 6c adjoining the axle part 6b on the right in the drawing of FIG. 1 provides the connection to the actual grate carriage.
- the wheel arrangement 1 has a first roller bearing arrangement 20 for mounting the running wheel 2 .
- the rolling bearing assembly 20 is designed as a double-row tapered roller bearing and includes an outer ring 21, a two-part inner ring 22-1, 22-2, and 2 rows of conical rolling elements 23-1, 23-2, which are in one of the inner ring 22 and the outer ring 21 formed bearing interior 24 are arranged.
- the rolling elements are accommodated in cages 25-1, 25-2 which guide the rolling elements and space them evenly from one another.
- the bearing inner ring parts 22 - 1 , 22 - 2 are connected to one another by means of a clamp element 26 .
- the clamp element 26 is used for the axial connection of the bearing inner rings 22-1, 22-2, so that the roller bearing arrangement 20 is designed as a bearing unit that can be assembled, transported and installed as a whole.
- the clamp element 26 makes it possible to seal a gap 27 formed between the bearing inner rings 22 - 1 , 22 - 2 to a certain extent and thus also to seal off the bearing interior 24 .
- An additional sealing element can be provided for improved sealing. With the help of the clamp element 26, dismantling of the bearing unit as a whole can also be made possible and facilitated.
- sealing elements 28-1 and 28-2 are arranged on the side of the roller bearing arrangement 20, namely on the side of the roller bodies 23.
- the sealing elements 28-1, 28-2 are preferably designed as so-called cassette seals which have a sealing inner workings present in a housing 30 with a sealing lip pen 32 so that the sealing lips 32 are themselves protected from an outside environment (see Fig. 2).
- the housing elements 30 of the cassette seals 28 are firmly connected to the respective bearing ring 21, 22, so that a closed bearing unit is provided overall.
- the bearing interior 24 is in turn filled with a lubricant, the lubricant preferably being designed for the service life of the roller bearing arrangement 20 so that relubrication is not necessary.
- the bearing arrangement 20 thus represents a maintenance-free bearing arrangement.
- the roller bearing arrangement 20 itself is built into the impeller 2 , with the outer ring 21 being connected to the impeller 2 in a rotationally fixed manner, while the inner ring 22 is connected to the axle 6 in a rotationally fixed manner.
- a fastening plate 8 is also provided which is fastened to the axle with screws 10 and secures the bearing arrangement 20 axially.
- a cover 12 is also provided on the impeller 2 and is fastened to the impeller 2 by means of screws 14 .
- this cover 12 would be provided with bores in order to allow lubricant to the wheel bearing assembly carrying the impeller 2 . This allows dirt and grime to enter the interior of the bearing.
- the roller bearing arrangement 20 is completely sealed off from the outside environment: on the one hand by the lateral sealing elements 28 and on the other hand also by the cover 12.
- a spacer element 16 is provided on the side opposite the cover 12 .
- the spacer element 16 not only has the function of sealing off the roller bearing arrangement 20 from the outside environment, but also serves as an axial stop for the roller bearing arrangement 20 in order to fasten the roller bearing arrangement 20 to the shaft 6, and as an axial element for the second roller bearing arrangement 40.
- the second roller bearing arrangement 40 is designed to support the printing wheel 4 on the shaft 6, in particular the shaft section 6b (see FIG. 1).
- the spacer element 16 is also radially inward with a Stage formed so that the rolling assembly 20 and the second rolling assembly 40 and thus the roller 2 and the pressure roller 4 are arranged at a predetermined distance from each other.
- the spacer or fastening element 16 can also be designed as a simple sleeve.
- the second rolling arrangement 40 is also designed as a maintenance-free bearing that is completely sealed off from the outside environment.
- a two-part inner ring 42 - 1 , 42 - 2 is also provided here, the parts of which are connected to one another by means of a clamp element 46 .
- two rows of tapered rollers 43-1 and 43-2 are provided, which are arranged in an O arrangement and are accommodated in cages 45-1, 45-2.
- Sealing elements 48 seal the bearing interior 44 laterally.
- the outer ring 41 of the roller element arrangement 40 is also designed in two parts, see reference numbers 41-1, 41-2. These parts of the outer ring 41-1, 41-2 are received by the pressure roller 4 and spaced apart so that they form a common part. It is of course also possible to design the outer ring 21 of the first roller bearing arrangement 20 in two parts.
- the outer ring 41 can be designed in one step analogously to the rolling body arrangement 20 and as shown in FIG.
- the second roller bearing arrangement 40 is also sealed laterally with seals 48 so that a maintenance-free bearing unit 40 is again provided.
- the seals can be designed as cassette or labyrinth seals.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112021005400.7T DE112021005400A5 (en) | 2020-10-15 | 2021-10-11 | Wheel arrangement for a grate car in a sinter plant |
CN202180069592.0A CN116406439A (en) | 2020-10-15 | 2021-10-11 | Wheel assembly for a grate carriage of a sintering installation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020127161.1 | 2020-10-15 | ||
DE102020127161.1A DE102020127161A1 (en) | 2020-10-15 | 2020-10-15 | Wheel arrangement for a grate car in a sinter plant |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022078933A1 true WO2022078933A1 (en) | 2022-04-21 |
Family
ID=78212101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2021/078002 WO2022078933A1 (en) | 2020-10-15 | 2021-10-11 | Wheel arrangement for grate carriage of a sintering plant |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN116406439A (en) |
DE (2) | DE102020127161A1 (en) |
WO (1) | WO2022078933A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015218865A1 (en) * | 2015-09-30 | 2017-03-30 | Aktiebolaget Skf | bearing arrangement |
US10023394B2 (en) * | 2015-06-25 | 2018-07-17 | Cast Steel Products Lp, By Its General Partner Cast Steel Products Gp Ltd. | Pressure roller bearing for a pallet car |
-
2020
- 2020-10-15 DE DE102020127161.1A patent/DE102020127161A1/en not_active Withdrawn
-
2021
- 2021-10-11 CN CN202180069592.0A patent/CN116406439A/en active Pending
- 2021-10-11 WO PCT/EP2021/078002 patent/WO2022078933A1/en active Application Filing
- 2021-10-11 DE DE112021005400.7T patent/DE112021005400A5/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10023394B2 (en) * | 2015-06-25 | 2018-07-17 | Cast Steel Products Lp, By Its General Partner Cast Steel Products Gp Ltd. | Pressure roller bearing for a pallet car |
DE102015218865A1 (en) * | 2015-09-30 | 2017-03-30 | Aktiebolaget Skf | bearing arrangement |
Also Published As
Publication number | Publication date |
---|---|
DE112021005400A5 (en) | 2023-08-17 |
CN116406439A (en) | 2023-07-07 |
DE102020127161A1 (en) | 2022-04-21 |
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