Modulare Systems for Conveyor Plants

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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)

2

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

© 2007 by kind permission of Energie Baden-Württemberg AG



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.

3

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



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

4

Boiler

Wet de-asher

Coal handling plant

© 2007 by kind permission of Vattenfall Europe AG



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.

5



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

6



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

7

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 )



8

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



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

9

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



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



2

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



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



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



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.

15

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



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

6

© 2007 by kind permission of Energie Baden-Württemberg



17

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)



8







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

19



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



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



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



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



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




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




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


Dimensions in mm



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.




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



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



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



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

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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



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

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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



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

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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




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.



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



RUD KettenRieger & Dietz GmbH u. Co.KGFriedensinsel73432 Aalen/GermanyTelephone +49 7361 504-0Telefax +49 7361 [email protected]

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Modulare Systems for Conveyor Plants

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