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For example, coal is con-veyed from the stockpileto the boiler. RUD systemsensure that bunkers aredischarged and wagonsunloaded withoutproblems (page 27)
Coal is conveyed to the coal mill.RUD Apron conveyors and cleaning-scraper conveyors ensure trouble-free operation (page 27)
Ash is removed from beneaththe boiler. RUD systems for dryde-asher plants ensure it isdisposed of reliably (page 19)
Ash is removed frombeneath the boiler.RUD systems for wetde-asher plants arerenowned for reliablecontinuous operation.
(page 5)
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M o d u l a r R U D S y s t e m s f o r C o n v e y o r P l
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RUD round steel chains have been successfully
used for decades for various tasks in fossil-firedpower plants. In each case, our specialists selectfrom RUD's flexible modular components theoptimum system for the particular conveyingapplication. The result is long-lasting, low-maintenance conveyor systems, which areperforming successfully around the world underconditions which place the highest demands onwear-resistance and mechanical strength.The illustrations are intended to show howand where this is done.
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n t s i n F o s s i l - F i r e d P o w e r P l a n t s
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Cross-section through a coal-fired power plant
M O D U L A R R U D S Y S T E M S F O R C O N V E Y O R P L A N T SI N F O S S I L - F I R E D P O W E R P L A N T S
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Boiler
Wet de-asher
Coal handling plant
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M O D U L A R R U D S Y S T E M SF O R S U B M E R G E D S C R A P E R C O N V E Y O R S ( S S C
Two wet de-asher systems arecurrently in worldwide use:
1. Flushing chamber de-ashersand2. Drag-chain wet de-ashersalso known as submergedscraper conveyors (SSC)
Drag-chain wet de-ashers (submergedscraper conveyors) are the mostfrequently used systems, flushingchamber de-ashers are now rarelyplanned in new power plants.Drag-chain wet de-ashers (SSC)are preferred on account of theireasier maintenance.
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Inspection/mainten-ance access door.
Tensioning station
R U D T E C H N O L O G Y F O R S U B M E R G E D S C R A P E R C O N V E Y O R S ( S S C )
RUD Chains has been working very
closely with well-known manufactu-rers of submerged scraper conveyors(SSC) since this technology wasdeveloped, and also maintainsexcellent contacts with end users.This of course has a positive effecton the success of further develop-ments of our products for this fieldof application. A good example isour new two-part attachment(Duomount) which can be mountedin the taut chain strand.It is presented for the first timehere in this brochure.Conveying capacities of between5 and 50 tonnes per hour (t/h) areachieved, depending on the angleof the inclined part of the conveyor.Throughputs of 50 t/h are achievedwith a conveyor trough width of2500mm. Whereas high ratio geared
motor drives were mainly used inthe past, nowadays variable speedelectromechanical or hydraulic drivesare generally preferred. The normalconveying speeds lie between 0.01and 0.05m/s, they very seldomexceed 0.07 m/s.
Return strand Air seal toboiler
Conveyingstrand (chaintop strand)
Drivestation
Maintenanceplatform
Conveyortrough filledwith water
Maintenanceplatform
Typical structure of a submerged scraper conveyor (SSC)
RUD components form the heartof the SSC: the conveyor chain, thechain connectors, the drive wheels,guide wheels, and the scraperswith their attachments. Tootheddrive sprockets which locate inter-nally on the chain are mainly usedin submerged scraper conveyor(SSC). Occasionally, pocketed type
sprockets are also used.We shall be pleased to assist youin selecting the optimum systemfor your conveying task.
Benefits/advantages of RUD components
I Highly wear-resistant to give long serviceI High-strength through optimal heat
treatment (see max. operational forces,operational force table)
I Self-cleaning in comparison to othersystems.
I Easy mounting and dismounting of theequipment and RUD components
I Low-maintenance
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RUD chainsoffers the following
priority chain systems for submergedscraper conveyors.
2. Conveyor chain system for conveying capacities upto 50t/h. OurSSRFattachment connects the scraperto multiple chain links.
I Available in chain dimensions 19x75 to 38x144I For scraper heights up to 2.5 x the external width
of the chain linkI Can be welded onto any shape of scraper profile,I Variable scraper spacings are possible
3. Conveyor chain system for conveying capacities up to25 t/h. OurFM flange attachment connects the scraperto a single chain link
I Available in chain dimensions 19x75 to 30x120I For scraper heights up to 1.8 x the external width
of the chain linkI Can be bolted into the taut chain strandI Variable scraper spacing possible
1. Conveyor chain system for conveying capacitiesup to 50t/h. Ournew two-part, mountableDuomount attachment connects the scraperto multiple chain links.
I Available in chain dimensions 19x75 to 38x144.I For scraper heights up to 2.5 x the external
width of the chain linkI Bolts onto any scraper profile, and can be
mounted in the taut chain strandI Variable scraper spacings are possible
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SSRF
FM
R U D C O M P O N E N T SF O R S U B M E R G E D S C R A P E R C O N V E Y O R S ( S S C )
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R U D AT TA C H M E N T SF O R S U B M E R G E D S C R A P E R C O N V E Y O R S ( S S C )
SSRF plug-in attachments,self-locking reversible, flatFor heavy-duty conditions.Used in twin-chain conveyors.
Advantages / benefits:I Robust and simpleI Extremely wear-resistantI Reversing operation possible
Welding guide:Attachment material 16 MnCr 5.Welding rod EN 440: G 4 Si 1Electrode: EN 499: E 42 4 B 42 H 5Comply with electrode drying
instructions.
Duomount attachment,
For heavy-duty conditions.Used in twin-chain conveyors.
Advantages / benefits:I Robust and simple designI Extremely wear-resistantI Reversing operation possibleI Bolts onto any scraper profiles,
and can be mounted in the tautchain strand
Dimensions in mm
Chaindxtin mm
19x75
22x86
26x100
30x120
34x136
38x144
A
156
182
214
252
282
309
B
21
25
30
35
38
43
C
82
95
112
129
147
165
E
113
131
155
179
202
227
F
49
52
65
75
85
96
G
88
103
120
142
156
174
H
16
18
25
27
32
35
I
16,5
16,5
20,5
24,5
30,5
30,5
kg/item
2,7
3,1
5,2
8,0
9,1
10,2
Dimensions in mm
Chaindxt in mm
19x75
22x86
26x100
30x120
34x13638x144
A
156
182
213,5
252
282309
B
21
25
30
35
3843
C
69
80
92
110
122137
E
100
116
135
160
177199
F
36
37
45
56
6068
kg/item
1,2
2,0
3,3
5,3
7,210,0
SSRF
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FM flange attachment, squared
For tough operational conditionsFor use in single and multi-strandconveyors.
Advantages / benefits:I Secure yet easily removedI Can be used as sliding connection
therefore supporting chain
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R U D AT TA C H M E N T SF O R S U B M E R G E D S C R A P E R C O N V E Y O R S ( S S C )
Dimensions in mm
Chaindxtin mm
19x75
22x86
26x100
30x120
A
61
70
80
100
B
70
79
93
105
C
33,5
38,5
43
52,5
E
5
5
6
7
F
22,5
26
30
37
G
M 20
M 20
M 24
M 30
H
110120130
110120130
130
160
I
253445
152535
22
25
kg/item
1,41,41,4
1,91,91,9
3,0
5,2
FM
Chain
Circulating mass
Breakage safety factor
Characteristics of the chainequipment
Wear characteristics
26x100 RUD 40cG-S3
77 kg/m
S = 11,9
Uniform, matched
Lower friction losses
Uniform
36x126 DIN 764
125 kg/m
S = 7,1
Many short, unmatched chainlengths
Higher friction losses
Uneven because of lower surfacecarburization
A comparison between the RUDmodular system and the chain endand shackle system used under thesame plant parameters yields thefollowing result:
An SSC incorporating the RUDmodular system can be operatedwith lower energy consumption,uniform low wear characteristicsallow longer planned maintenanceintervals. An SSC operating undercomparable plant conditions withround steel chains according toDIN 22252 generally wears appro-ximately three times faster than
RUD special steel grade roundsteel chains. Multiple link moun-ting gives improved scraper barstability.
RUD also offers the advantage of using attachments that do nothave to transfer the tensile forces in the chain strand.This eliminates a disadvantageous double function.
R U D C H A I N SF O R S S C
O t h e r R U D a t t a c h m e n t s o n r e q u e s t
Used in twin-chain conveyors H = bolt lengthI = clamping length
Part 1 Part 2
Intermediate ring
...±0.05dia. chain
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R U D C H A I N SF O R S U B M E R G E D S C R A P E R C O N V E Y O R S ( S S C )
0
Hardening curves across the surface zones in the chain links
RUD-chainshave outstanding core
toughness, which gives them highbreaking strength and resistance tobrittle fracture.Although the breaking strength ofround steel chains generally decrea-ses with increasing depth of case-hardening,RUD chainsare charac-terized by a very high resistance towear coupled with unusually highbreaking strength and toughness.As the magnitude and ratio of the
mechanical and tribological stresseson the chain is plant-specific, RUDoffers special steel grade chains andcomponents with diverse combinati-ons of wear resistance and breakingstrength.
AllRUDspecial steel grade chains
and components haveextraordina-rily high resistance to vibration,which makes a decisive contributionto preventing the occurrence of fati-gue fractures during operation. Therobustness of the chains and othercomponents are matched to eachother and to the operational stres-ses.
Material
High-grade constructional steelswith a high degree of purity, finegrain and insusceptibility to aging,Cr, CrNi or CrNiMo alloyed.
Heat treatmentCarburizing with reproducible pro-cess parameters ensures the lowestpossible variance of chain propertiesover a large number of productionbatches.
Testing and documentationChains and components are subjec-ted to regular testing, and the follo-wing are documented:I Breaking strengthI Resistance to vibrationI Hardness curveI Resistance to wear
Interlink points
Case-hardened surface zone
Improvement in resistance to wear incomparison to quenched and temperedchains
Distance from the surface
DIN 22252-2 quenchedand tempered(for comparison)
H a r
d n e s s
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R U D C H A I N C O N N E C T O R SF O R S U B M E R G E D S C R A P E R C O N V E Y O R S ( S S C )
FL flat connector
For use in single and multi-strandconveyors.Runs over sprocket wheels, groovedwheels and flat guide wheels.
Advantages / benefitsI Overall dimensions approx. same
as those of chain linkI Simple assembly with a hammerI Extremely wear-resistant
Dimensions in mm
Chaindxt in mm
22x86
26x100
30x120
34x136
38x144
A
58
62
70
82
95
B
77
89
107
117
133
C
26
29
36
40
45
kg/item
1,2
1,8
2,9
4,3
5,8
RS chain connector, space-saving, for use in single and multi-strand conveyors.Runs over sprocket wheels, groovedwheels and flat guide wheels.
Advantages / benefitsI Overall dimensions same
as those of chain link
Dimensions in mm
Chaindxt in mm
19x75
A
51
B
66,5
C
23
E
M 12
kg/item
0,8
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R U D C H A I N C O N N E C T O R SF O R S U B M E R G E D S C R A P E R C O N V E Y O R S ( S S C )
VK chain connector, square-
shape for heavy duty conditions.For use in single and multi-strandconveyors.Only runs over sprocket wheels andflat guide wheels.
Advantages / benefitsI Extremely robustI Large wear volume
Note: Make sure that the chain connectors are mounted with the correct orientation to the sprocket wheels.
Dimensions in mm
Chaindxt in mm
19x75
22x86
26x100
30x120
34x136
Type
A
B
B
B
B
A
61
70
80
100
110
B
70
79
90
105
120
C
67
77
88,5
105
120
E
72
-
-
-
-
F
M 20
M 20
M 24
M 30
M 33
kg/item
2,0
2,8
4,6
8,1
11,8
13
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R U D S P R O C K E T W H E E L SF O R S U B M E R G E D S C R A P E R C O N V E Y O R S ( S S C )
Sprocket wheels, multipart
for drive and deflection
With exchangeable, extremelywear-resistant toothed wheelrims for heavy-duty conditions.
Bolt strength class 8.8, locking nuts V accordingto DIN 980-8. The positions of the bolts maydiffer from those shown in the drawings.
The toothed rim segments must be mountedso that, in each case, the same numbers (codenumbers) are next to each other at the joints.3-part hub wheels mayonly be used withclamping rings .
Max. wheel centre spacing tolerance fortwin-chain conveyors ± 0.05 diam. of chain.
Chaindxt in mm
19x75
22x86
26x100
30x120
34x136
Z
81012
8910
8910
89
10810
Tk
384479574
440495549
512575639
614690
766697869
A
555555
656565
787878
9898
98107107
B
185220230
185230270
270300340
320320
320320320
C
404580
408080
10012580
9090
90110110
E
135120160
135160160
200170160
180180
180220220
Fraw
708070
7070125
12070180
170170
170170170
Fmax
125140140
120140170
180210210
220230
200200320
Wt. cmplt.wheel kg
38,560,590,0
41,580,085,0
95,5118,0140,0
140,0170,0
200,0210,0300,0
Wt. toothedrim kg
11,521,025,0
17,022,027,0
21,035,041,5
39,044,0
48,050,062,0
Sprocketwheel design
3-part3-part3-part
3-part3-part3-part
3-part2-part3-part
Withbolt-on
teethWith
bolt-onteeth
All non-listed numbers of teeth and dimensions available on request.
Dimensions in mm
4
TkØ = pitch circle diameter H = enveloping circle
H < TkØ + 1.2 • ba
Toothed wheel rim
Toothed wheel rim
Clamping ringHub wheel
Hub wheel
ba = outer chain width
Design: With exchangeable, split, toothed wheel rim.Design: With bolt-on teeth
Design: 2-part with hub wheel, toothed wheel rim(2 x 180° segments) and bolts
Design: 3-part with hub wheel, toothed wheel rim (2 x180° segments), clamping ring and bolts
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R U D S C R A P E R B A R SF O R S U B M E R G E D S C R A P E R C O N V E Y O R S ( S S C )
RUD Chains' complete scraper bars
For the widest range of conditionsand highest loads.Our range covers all sizes up tochain dimensions of 38x144, andlengths up to 2.5m.
Standard wear bars are made ofwear-optimized constructional steel.
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Head plate with SSRF attachmentwelded-on
Stable square hollow section
Wear bars
Standard version of a scraper bar for severe operational conditions,high conveying capacities, both sides can be used
SSRF attachmentwith mounting plate
Stable square hollow section
Holes for mountingthe scraper strip
Scraper bar with exchangeable supportingrollers and scraper strips for high conveying capacities
M o u n t i n g h o l e s
f o r s u p p o r t i n g
r o l l e r s
Head plate with SSRF attachmentwelded-on
Wear bars
Wear bar
Crosspiece withdrainage slots
Scraper bar with drainage slots for very coarse material,medium conveying capacities, both sides can be used
Fixed attachment for easymounting and dismountingof the scraper bar
Special alloy wear bars
Scraper bar for low conveying capacities withspecial alloy wear bars
DIN U-section
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Particular attention is given not only
to the design of the drive wheels butalso to that of the guide wheels, astheir reliable working is an impor-tant factor in the service life of thechain equipment.
Two types of guide wheels are usedin SSC de-ashers:
1. Guide and tensioning wheels
outside the water bath in theempty compartment as:
I Grooved wheels with a flange(type A) for use in the tensioningstations or as
I Grooved wheels without flange(type B) for use in the empty com-partment under the trough.
I Flat flange wheels (type C) forboth application cases, howeverthis is only possible with the useof flange attachments and veryshort distances between scraperbars.
I Our guide wheels are optimally
matched to the geometry of ourconveyor chains and attachments,thus guaranteeing trouble-freeoperation.
I We produce guide wheels forevery application, every chain sizeand every pitch circle diameter.We are always pleased to assistwith their design and the creationof an optimal solution.
R U D G U I D E W H E E L SF O R S U B M E R G E D S C R A P E R C O N V E Y O R S ( S S C )
Example of the use of a grooved wheel with SSRF attachments
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2. Underwater wheels in the
trough, mounted on the troughwall
I Grooved wheels with flangefor use in the upper conveyingcompartment
The only difference between stan-dard guide wheels and underwaterwheels lies in the design of theoverhung shaft bearing, for whichRUD has optimized the design for just this application. Countlessreferences worldwide verify theirhigh effectiveness.
Advantages / benefitsI Robust constructionI Optional electronic rotation
control availableI Mounted on the outside wall of
the troughI Can be used when converting
existing plants or in new plantsI Easy mountingI Available in all guide wheel
dimensionsI Two type variants available
- With end shield or- Without end shield in fixed hub
casing View of the trough wall
End shield
RUD guide wheelTrough wall
End shield
Electronicrotation control
RUD chain
RUD scraper
Trough floor
Type A Type B Type C
The running surfaces ofRUD guide wheels are inductive hardened
Type A + type B for andSSRFattachments Type C forFM attachments
RUD UNDERWATER WHEELSF O R S U BME RG E D S CRA P E R CO N V E Y O RS ( S S C)
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© 2007 by kind permission of Energie Baden-Württemberg AG
© 2007 by kind permission of Vattenfall Europe AG
© 2007 by kind permission of Vattenfall Europe AG
© 2007 by kind permission of Energie Baden-Württemberg AG
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M O D U L A R R U D S Y S T E M S F O R D RY D E - A S H E R S
The development of ash handlingplants was widened to includedry de-ashing systems in the1990s.The advantages of dryde-ashing are:
I No water requiredI No water treatment requiredI Low thermal energy lossesI Reduction of unburned fuel as a result
of the afterburning effectI Improved boiler efficiencyI Easier compliance with regulations
Ash quality is advantageous for itsfurther marketing
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R U D T E C H N O L O G Y F O R D RY D E - A S H E R S
0
RUD has contributed to the develop-ment of "dry de-ashing" systems.It has developed an Apron Conveyorsystem which, in comparison to othersystems, remains sealed not only onthe straight but also on the curvedconveyor sections. This system was
developed on the basis of the triedand tested round steel chain and isdesigned specifically for it. In contrastto wet de-ashing, the ashes are notscraped along the floor of the troughbut carried along by the plates (A)attached to the conveyor chains untilthey are discharged. The plates run onwheels or, if required, on rails (B).The conveyor chain is protected bybaffle plates (C) projecting over theside walls of the plates.The conveyor chain is driven viaexternally toothed pocket wheels.These are more tolerant of longi-tudinal chain wear than internallytoothed wheels.
This principle offers the following advantages:
I Lower coefficients of friction in the upper conveying compartment, whmeans that, in some cases, a smaller chain size can be used for a givenconveyor capacity
I As the conveyor chain does not run through the material being conveyit is subjected to less wear than in a comparable wet de-asher.
I Relatively insusceptible to large lumps of ash, which can sometimes faoff the boiler wall when soot blisters form.
I Even easier to maintain than the already low-maintenance chainequipment of the SSC de-asher.
I Dry de-ashers with a RUD Apron Conveyor can be built with a significlower profile than other designs.
Conveying capacities of between5 and 70 tonnes per hour (t/h) areachieved, depending on the angleof the inclined part of the conveyor.Throughputs of 100 t/h have alreadybeen achieved. The conveyor is2000mm wide.
Conventional conveying speedslie between 0.01 and 0.07m/s.They seldom exceed 0.1m/s,and are achieved with regulatedelectromechanical or hydraulicdrives.
A A CB
B
4 1/2
3 5
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R U D C O M P O N E N T SF O R D RY D E - A S H E R S
21
RUD components form the heart of
the Apron Conveyor: the conveyorchain, the chain connectors, the drivewheels, guide wheels and the dragchain together with its attachments.
The general advantages of theRUD components are:I Highly wear-resistant to give
long service lifeI High-strength through optimal heat
treatment (see operational forces,similar to those of wet deashing)
I Plates remain sealed, even in thecurves, thanks to a patentedattachment link
I The reinforced plates in the chainstrand are optimally adapted tothe conveying task, and supportedby at least four chain links
I Simple mounting in and dismoun-ting from the chains, and therefore
I Low-maintenance
RUD Apron Conveyors consist of the following components:1. Conveyor chains, sizes 19x75....30x1202. RS and FL chain connectors3. Three-part pocket wheels on the drive-side,
and one-piece pocket wheels on the deflectionside
4. Special attachments based on the MEE-T5. Robust plates optimally adapted
to the conveying task which,in conjunction with the MEE-Tattachments, form a
stable multi-linkconnection
RUD Apron Conveyor in a typical dry de-asher
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RUD chains should not be subjected
to operational forces exceedingthose shown in the table(see table on page 7).The following values and dimensionshave proven themselves as designguidelines for RUD Apron Conveyors:
R U D A P R O N C O N V E Y O RF O R D RY D E - A S H E R S
2
Chaindxtin mm
19x75
22x86
26x100
30x120
38x144
Chain widthbi (min) ba (max)in mm in mm
22 63
26 74
31 87
36 102
44 127
Weight
kg/m
7,7
9,7
13,3
17,5
30,0
Standardstrandin mm
10725
10234
8300
5880
3312
RUD 40c-GTested
breaking force kN
135 227
182 304
255 425
340 566
530 910
RUD Super 35Tested
breaking force kN
117 198
160 266
222 370
300 500
480 800
RUD SPECIAL STEEL GRADE ROUND STEEL CHAINShighly wear-resistant for materials handling
Chainsize
19x75
22x86
26x100
30x120
38x144
d
19
22
26
30
38
t
75
86
100
120
144
Strandbreaking
force(kN)
227
304
425
566
910
Totaloperational
force(kN)
60
80
106
140
230
PlatePitch
4xt
4xt
4xt
4xt
4xt
No. of pla-tes per 10m
conveyorlength
71
62
54
46
39
No. of teeth[pocketwheel]
8
8
8
8
8
Attachmentoffset(mm)
18
23
27
32
39
Pitchcircle diam.
(mm)
384
440
512
614
737
Platewidth(mm)
600-800
1000-1200
1200-1400
1600-2000
1600-2000
Height ofconveyor
(mm)
400-450
500-560
585-655
700-780
840-940
Quality classes (see page 8)
Dimensions in mm
Dimensions in mm
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23
R U D C H A I N C O N N E C T O R SF O R D RY D E - A S H E R S
FL flat connector
For use in single and multi-strandconveyors.Runs over sprocket wheels, groovedwheels and flat guide wheels.
Advantages / benefits:I Overall dimensions approx. same
as those of chain linkI Simple assembly with a hammerI Extremely wear-resistant
Dimensions in mm
Chaindxt in mm
22x86
26x100
30x120
38x144
A
58
62
70
95
B
77
89
107
133
C
26
29
36
45
kg/item
1,2
1,8
2,9
5,8
RS chain connector, space-savingFor use in single and multi-strandconveyors.Runs over sprocket wheels, groovedwheels and flat guide wheels.
Advantages / benefits:I Overall dimensions same as
those of chain link
Dimensions in mm
Chaindxt in mm
19x75
A
51
B
66,5
C
23
E
M 12
kg/item
0,8
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R U D P O C K E T C H A I N W H E E L SF O R D RY D E - A S H E R S
4
Pocket chain wheels, multipart
for drive and deflectionWith exchangeable extremelywear-resistant pocket wheel rimsfor heavy-duty conditions.
The wheel hub is ready for mountingand drilled to fit. The teeth of theexchangeable, split pocket wheelrims are made of highly wear-resistant, case-hardened cast steel.
Design: 3-partWith hubs, pocket wheelrim (2x180° segments),clamping ring and bolts.
Chainsize
19x75
22x86
26x100
30x120
38x144
Z
8
8
8
8
8
Tkpcd.
384
440
512
614
739
A
66,5
77
91
108
130
B
185
185
235
275
370
C
45
65
75
75
85
E
145
165
175
195
245
Fraw
65
65
100
100
100
Fmax
130
110
150
180
250
Wt. cmplt.wheel kg
49,0
66,0
100,0
195,0
315,7
Pocketwheel rim
kg
15,0
23,0
45,8
90,0
125,0
Dimensions in mm
TkØ = pitch circle diameter
Pocket rim
Clamping ring
Hub
H = enveloping circleH < TkØ + 1.2 • ba
ba = outer chain width
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R U D P O C K E T C H A I N W H E E L SF O R D RY D E - A S H E R S
Pocket chain wheels, one-
piece, highly wear-resistantfor deflectionThe highly wear-resistant pocketteeth are made of case-hardenedcast steel. The steel wheel body isof a welded design, and can becan be machined if requiredWithfully machined hub.
Chaindxt in mm
19x75
22x86
26x100
30x120
38x144
Teeth
8
8
8
8
8
Tk
384
440
512
614
739
A
66,5
77
91
108
130
B
185
185
235
275
370
C
45
65
75
75
85
(E)
140
165
175
195
245
Fmax
125
115
150
180
250
25
Dimensions in mm
TkØ = pitch circle diameter H = enveloping circleH < TkØ + 1.2 • ba
ba = outer chain width
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MEE-T attachment with
attachment bolt.For heavy-duty conditions.Used in RUD Apron conveyors toattach the plates, runs over RUDpocket wheels
Advantages / benefits:I Robust and simpleI Wear-resistantI Can be freely weldedI Secured with locking pins
if required
Fitting:I With chain slack, hook the chain
links into the attachment.I Secure with locking pins [optional]
Welding guide:Attachment material 20 MnCr 5DIN 17210.
Welding rodEN 440: G 4 Si 1Electrode:EN 499: E 42 4 B 42 H 5Comply with electrodedrying instructions.
Chaindxt in mm
19x75
22x86
26x100
30x120
38x144
A
65
75
90
105
128
B
80
95
111
128
160
C
35
40
45
55
65
E
50
60
70
81
101
kg/item
1,0
1,6
2,5
4,6
7,3
6
R U D AT TA C H M E N T SF O R D RY D E - A S H E R S
© 2007 by kind permission of Vattenfall Europe AG
Dimensions in mm
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M O D U L A R R U D S Y S T E M SF O R C O A L H A N D L I N G P L A N T S
RUD Chains' conveying systemsare optimally adapted for thevarious ways of conveying coalto the stockpile, and from thereto the boilers in conventionalpower plants.
27
All conveyors are designed with theRUD pocket wheel system. The drivehas multipart and the deflection one-piece pocket wheels. Alongside thestandard MEE-T attachment there isalso a special design with bolts forapron conveyors or as a one-pieceMEE-TK scraper with, if required,welded-on scraper edges.
The width of the conveyor can rangefrom 0.8 to 1.8 m. Conventionalspeeds lie between 0.1 and 0.3 m/s,or may be even faster whenconveying non-abrasivematerials.
© 2007 by kind permission of Energie Baden-Württemberg AG
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1. Twin and multi-strand
conveyorsfor bunker discharge and unloadingcoal trains use chain sizes 18x64,22x86, 26x100 und 30x120,together with MEE-T attachmentswith optimally designed, welded-onscrapers, or MEE-TK attachments.These conveyors are capable of shif-ting up to 1,000 tonnes of coal perhour. The coal is conveyed in theupper strand.
Bunker discharge conveyor
I Suitable for unloading coalfrom transport wagons
I Length = 30m; width = 2.5mI Six 26 x 100 mm strandsI Matched chains for even load
distributionI Scrapers fixed without bolts
R U D T E C H N O L O G Y F O R C O A L H A N D L I N G P L A N T S
8
Scraper for multi-strand con-veyors, bunker discharge con-veyors MEE-TK, MEE-T
I Can be fixed to chains withoutsecuring pins with spacings of6 to 8 links, securing pins arerequired for longer link spacings
I Deflection over flat wheels,one-piece pocket wheels arerecommended
Wear-optimizedstructural steel
Scraper edgeswith extra wear-resistant, build-upwelding if required
MEE-TK, one-piece asspecial version of theMEE-T
MEE-T with welded-onscraper, multipart
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R U D C O N V E Y O R SF O R C O A L H A N D L I N G P L A N T S
Example of an arrangement of
MEE-TK four-strand conveyor
Mounting and dismounting can bedone with the chain loops slack butstill closed.
A
U
A
U
1
2
3
4
A
UU
A
U
A
U
A
2. RUD Apron Conveyorin a coalhandling plant, using chain sizes22x86, 26x100 and 30x120, MEE-Tspecial attachments, and optimally
designed, sealed plates. Apron con-veyors have a capacity of between75 and150 t/h. Apron conveyors areused for high-ash and, in particular,very wet, fine coals.
Chainsize
22x86
26x100
30x120
d
22
26
30
t
86
100
120
Strandbreaking
force (kN)
304
425
566
Total opera-tional force
(kN)
80
106
140
Platepitch
A
4xt
4xt
4xt
No. of pla-tes per 10m
length ofconveyorN
62
54
46
No. of teeth[pocket
wheel]Z
8
8
8
Attachmentoffset
[mm]
23
27
32
Pitch circlediam.
(mm)Tk
440
512
614
Platewidth
(mm)B
1000-1200
1200-1400
1400-1800
Height ofconveyor
(mm)C
500-560
585-655
700-780
Components of the apron conveyor - see pages 20 to 24
29
Dimensions in mm
Orientation A Orientation U
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R U D D R A G C H A I N C O N V E Y O R SF O R C O A L H A N D L I N G P L A N T S
30
3. Twin-strand trough chain
conveyor in a coal handling plant,using chain sizes 22x86 and 26x100,and MEE-T attachments with opti-mally designed, welded-on scrapers.
These conveyors have capacities of
between 75 and 150 t/h.Twin-strand trough chain conveyorsare used for conveying low abrasion,easy flowing materials.
Standard angle section
MEE-T
Scraper for coal feeder conveyorwith MEE-T attachments
I Where long distances between theattachments occur the MEE-Tshould always be secured with alocking pin
I Deflection over one-piece pocketwheels
Standard U-profile
Scraper for coal feeder conveyoras cleaning scraper MEE-T
I Where long distances between theattachments occur the MEE-T shouldalways be secured with a locking pin
I Deflection over one-piece pocketwheels
4. Cleaning scraper chainconveyor under the main coalhandling system, using chainsizes 10x38 and 14x50, MEE-Tattachments with optimallydesigned, welded-on scrapers.These twin-strand conveyors havecapacities between 1 and 5 t/h.
MEE-T
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R U D AT TA C H M E N T SF O R C O A L H A N D L I N G P L A N T S
31
The MEE-T attachment hooks in to
the chain and utilizes, one-partpocket wheelsFor heavy-duty conditions (scrapernot higher than the width of a chainlink). For use in twin and multi-strand conveyors.Runs over RUD pocket wheels andflat guide wheels.
Advantages / benefits:I Robust and simpleI Wear-resistantI Can be freely weldedI Secured with locking pin if required
Fitting:I With chain slack, hook the chain
links into the attachment.I Secure with locking pin (optional)
Available with or without locking pin
Chaindxt in mm
10x38
14x50
18x63/64
22x86
26x100
30x120
A
35
50
62
75
90
105
B
43
60
78
95
111
128
C
16
20
25
40
45
55
E
27
38
49
60
70
81
kg/item
0,15
0,35
0,6
1,6
2,5
4,6
MEE-TK attachment, hook-in,one-piece, complete scraperFor heavy-duty conditions (scrapernot higher than the width of achain link).For use in twin and multi-strandconveyors.
Runs over RUD pocket wheels andflat guide wheels.
Advantages / benefits:I Robust and simpleI Wear-resistantI Simple mounting and
dismountingI Finished scraper profiles,
can be used without furthermachining
Fitting:I Hook the slack chain into
the attachment
Welding guide: Attachment material 20 MnCr 5 DIN 17210. Welding rod EN 440: G 4 Si 1.Electrode: EN 499: E 42 4 B 42 H 5. Comply with electrode drying instructions.
Available with or without locking pin
Chaindxt in mm
10x38
14x50
18x63/64
22x86
26x100
30x120
A
35
50
62
75
90
105
B
43
60
78
95
111
128
D
16
20
25
40
45
55
E
27
38
49
60
70
81
M
300
350
450
520
560
580
X1
246
274
352
400
420
418
kg/item
1,5
2,8
5,5
12,5
18,3
28,3
Other dimensions available on request.
Dimensions in mm
Dimensions in mm
MEE-T
MEE-TK
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R U D C O M P O N E N T SF O R C O A L H A N D L I N G P L A N T S
32
Chaindxtin mm
10x38
14x50
18x63
18x64
Chain widthbi (min) ba (max)in mm in mm
12,5 34
16,3 47
21 60
21 60
Weight
kg/m
2,1
4,0
7,0
6,9
Standard strandin mm
20026
19950
15057
15296
RUD 40c-GTested breaking force
kN
38 64
74 128
120 200
120 200
RUD ROUND STEEL CHAINS
in special qualityHighly wear-resistant for conveyors
Quality classes (see page 8)
RSP chain connector, space-savingFor use in single and multi-strand
conveyors. Runs over pocket chainwheels, grooved wheels and flatguide wheels.
Advantages / benefits:I Overall dimensions same
as those of chain link
Fitting:I Hook the U-brackets into the chainsI Fit the connector shells from the
sides and screw into placeI Tighten the screws after bringing
into operationDimensions in mm
Chainsdxt in mm
10x38
14x5018x63
18x64
A
27
3843
43
B
35
4856
56
C
12
1718,5
18,5
E
M 6
M 8M 10
M 10
kg/item
0,1
0,250,5
0,5
Dimensions in mm
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R U D C O M P O N E N T SF O R C O A L H A N D L I N G P L A N T S
33
Chainsize
10x38
14x50
18x63
18x64
22x86
26x100
30x120
Z
8
8
8
8
8
8
8
Tkpcd.
194
256
323
328
440
512
614
A
35
49
63,5
63,5
77
91
108
B
80
120
150
150
185
235
275
C
30
40
45
45
65
75
75
E
80
105
125
125
165
175
195
Fmax
45
80
90
90
110
150
180
Wt. cmplt.wheel kg
6,5
17,5
31,5
32,0
66,0
100,0
195,0
Pocket wheelrimkg
3,0
5,5
10,0
10,0
23,0
45,8
90,0
Pocket chain
wheels, multipartfor drive anddeflectionWith exchangeableextremely wear-resi-stant pocket wheelrims for heavy-dutyconditions.
Pocket chain wheels,one-piece, highlywear-resistant forheavy-duty opera-ting conditions
Dimensions in mm
TkØ = pitch circle diameter H = enveloping circleH < TkØ + 1.2 • ba
ba = outer chain width
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The RUD product range
Conveying systems (FA)
RUD conveying systems offeroptimal solutions for the packa-ged goods and bulk materialsindustries, and mining, and useround steel chains as the tractionmechanism. We design andmanufacture bucket elevators forbulk materials, with round steelchains, sprocket chains and beltsas the traction mechanisms.
Hoisting chains (H)We are the original equipmentmanufacturer for the leading,worldwide hoisting gear brands.We supply highly wear-resistantround steel chains according toEN 818-7 for motor driven hoi-sting equipment and manual lif-ting tackle.We manufacture not only the
smallest sized chain at 3x9 mm,but also the world's largesthoisting chain measuring31.5x90 mm.We develop system solutions forlifting devices, and manufacturervarious associated components,such as pocket wheels, chainguides and guards.
Mountable hitching
equipment (MA)RUD hitching equipment guaran-tees safety when lifting andmoving loads. Over 250 different,tested hitching points – weldedor bolted – in conjunction withour VIP hitching chains meet thehighest demands in all areas ofapplication of innovative andfuture-oriented lashing and lif-ting equipment.
Tyre protection chains (RS)RUD and Erlau tyre protectionchains are dense, moveablechain meshes made of high qua-lity alloy stainless steel. Theyprotect the treads and side wallsof the tyres of earth movingmachines used in mining, slag-handling and recycling tasks.
Anti-skid chains (GL):The RUD and Erlau snow, rota-ting and forestry chains in ouranti-skid range guarantee thehighest safety, and ensure maxi-mum traction not only on snowand ice-covered roads but alsoon the roughest terrain. Thebreadth and depth of our well-balanced product range offersthe optimal solution for everyfield of application and everyvehicle. Our success has beenbuilt on three principles: innova-tion, quality and service.
R U D M I S S I O N
34
I We are a dynamic, globally active,
modern family business.Our objectives are continuous,profit-oriented growth, and clearleadership with our products andservices in our market segments.
I With more than 130 years of expe-rience, we develop future-orientedsolutions for the most diversefields of application. They arebased on round steel chainsystems and components in a verywide range of shapes and sizes.
I All our other products are also theresult of our striving for perfectionin our core competences of for-ming, welding, heat treatmentand surface technology.
I We focus our activities on long-
term partnerships with our custo-mers, their satisfaction, and theirtrust in us.We guarantee innovative technolo-gy coupled with the highest,universal standards of qualityand safety.This is a responsibility that we allshare.
I Our actively practiced and trustfulcompany culture coupled withcontinual training and furthereducation makes our internationalcompany family a flexible, moti-vated, high-achieving and compe-tent team.
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Germany
RUD KettenRieger & Dietz GmbH u. Co. KGFriedensinsel73432 Aalen/GermanyTel. +49 7361 504-0Fax +49 7361 [email protected]
AustraliaRUD Chains Pty. Ltd.8 Westlink PlaceRichlands Queensland 4077Tel. +61 7 3712 8000Fax +61 7 3712 [email protected]
USARUD Chain Inc.840 N. 20th AvenueHiawatha, IA 52233Tel. +1 319 294 0001
Fax +1 319 294 [email protected]
Brazil
RUD Correntes Industriais Ltda.Rua Andreas Florian Rieger, 381CEP 08745-260 -Mogi das Cruzes SPTel. +55 11 4723-4944Fax +55 11 [email protected]
Great BritainRUD Chains Ltd.John Wilson Business ParkUnits 10-14, Thanet WayWhitstable, Kent CT5 3QTTel. +44 1227 276611Fax +44 1227 [email protected]
IndiaRUD India OfficeGala No. 60, Asiatic Arcade,Vartak Nagar
Thane (West) - 400 606Maharashtra, IndiaTel. +91 2225884895Fax +91 [email protected]
Romania
RUD Florian Rieger SRLstr. Europa Unita nr. 4550052 SibiuTel. +40 2692 03 600Fax +40 2692 03 [email protected]
ChinaRUD Rieger & Dietz (Beijing)Trading Ltd.Unit 0201, Build. 6,SOHO Xiandai Cheng88 Jianguo Road, Chaoyang, District100022 Beijing/P.R. ChinaTel. +86 10 85893309Fax +86 10 [email protected]
35
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RUD KettenRieger & Dietz GmbH u. Co.KGFriedensinsel73432 Aalen/GermanyTelephone +49 7361 504-0Telefax +49 7361 [email protected]
Tradition in Leadership
R U D W O R L D W I D E
C O M M U N I C A T I O N A N D S U P P O R T