Elevadores de cangilones AUMUND: Tipos BW-Z y BW-D, Monografías, Ensayos de Diseño Industrial

¡Descarga Elevadores de cangilones AUMUND: Tipos BW-Z y BW-D y más Monografías, Ensayos en PDF de Diseño Industrial solo en Docsity!

B u c k e t E l e v a t o r s

The characteristic features of the

AUMUND bucket elevator type BW–Z

with forged central chain are high con-

veying capacities obtained with a close

bucket spacing and standardized bucket

widths ranging from 200 to 1,000 mm.

They are primarily applied to convey abra-

sive bulk materials such as cement clinker

in continuous operation. Due to the close

bucket spacing, the conveyed material is

fully taken by the buckets and discharged

in a continuous manner to the subsequent

conveying systems.

New Development

The forged chains AU 06, 13 and 15 are

available with labyrinth seals and

lubricated bolt and bush connection. Field

tests have resulted in a considerably better

wear behaviour. The central chains are

available in standard sizes determined by

the required center distance and

conveying capacitiy. The symmetrical

design of the chain links which are

fabricated from high-quality forgings, con-

tributes to a longer service life. Bolts and

bushes are made of special steel and are

highly wear resistant on account of the

hardening processes applied.The design of

the links with forged cams permits the

support on the shoulders of the

untoothed drive wheel (friction ring). This

results in a favourable load distribution

between chain and drive wheel: the so-

called three-point support-formed by the

contact points of the chain bush and the

side bars with the drive wheel. Uniform

wear of the drive wheel is reached by a

constant shifting of the contact points

chain/wheel which is ensured by the

determination of the wheel diameter (not

a multiple of the chain pitch). For the

buckets, AUMUND has chosen an angular

bracket fixing which is simple and reliable

at the same time.The angular brackets are

not rigidly connected to the chain bolts.

Due to the play between chain bolts and

angular brackets (an AUMUND-patent),

the transmission of vibrations is reduced

and the formation of cracks on buckets

and welding seams is reduced to a mini-

mum. In addition, the angular brackets

make bucket assembly much easier.

Bucket fixing by angular brackets

Three-point support of the chain on the drive wheel

Central chain with angular bracket

Standard chain sizes

Untoothed drive wheel

Bucket elevator head

Bucket Elevator with Central Chain Type BW-Z

Higher kiln capacities and new grinding

processes in the cement industry, require

bucket elevators with conveying capacities

of more than 1,300 t/h or with center dis-

tances exceeding 60 m.

These latest requirements are met by the

AUMUND-double bucket elevator type

BW-D:

By combining two standard bucket

elevators with central chain, the conveying

capacity can be doubled.

The drive head illustration shows the two

bucket strands on a common drive shaft

which is supported in pillow-block bear-

ings. Twin drives are installed in order to

provide the high drive power required.

The weight of each drive unit can thus be

reduced and the bucket elevator casing

can be symmetrically loaded. In addition,

the introduction of forces into the drive

shaft is more uniform.

Without being mechanically connected,

the two bucket strands are arranged in

one and the same casing.The chutes in the

feeding area direct the material to the

bucket strands by way of a material flow

divider.

Both sprockets with their tail axles

are supported in separate bearings.

Different chain elongations can thus be

independently compensated.

Take-up station with individual tensioning system for each chain

Double bucket elevator with twin drive

Double bucket elevator for a conveying capacity of 1,300 t/h

Central chains according to AUMUND standard

for Type BW-Z and BW-D

Type Chain pitch Breaking Bolt and bush Bucket spacing Bucket depth Bucket width mm load kN surface cm^2 mm mm mm AU 01.1 140 540 17.5 280 210 200 to 400 AU 01.1 T2 140 540 17.5 560 210 200 to 400 AU 02.2 152.35 625 24.0 304.7 250 250 to 450 AU 02T2 152.35 625 24.0 609.4 250 250 to 450 AU 04.1 177.80 800 32.0 355.6 285 400 to 800 AU 06.2 177.80 1,080 40.0 355.6 285 400 to 900 AU 13.2 177.80 1,440 51.0 355.6 285 400 to 1, AU 15.2 177.80 1,800 64.0 355.6 285 400 to 1,

Double Bucket Elevator Type BW-D

The indicated conveying capacities correspond to a 100% bucket filling (water filling). · Recommended filling degree: 75%. Bucket Theoretical capacity m^3 /h Width Protrusion Volume Spacing Conveyor speed m/s with hydraulic coupling 1.25 1.39 1.56 1.72 1. Drive wheel Ø mm mm mm dm 3 mm 790 890 1,005 1,115 1, 500 285 42.0 356 531 590 663 731 794 560 285 47.0 356 594 661 741 817 889 630 285 52.8 356 667 742 833 918 998 710 285 59.6 356 753 838 940 1,037 1, 800 285 67.2 356 849 945 1,060 1,169 1, 900 285 75.6 356 956 1,063 1,193 1,315 1, 1,000 285 83.8 356 1,059 1,178 1,322 1,458 1, 1,100 285 92.2 356 1,165 1,296 1,454 1,604 1,

Preferred sizes

Double Bucket Elevator Type BW-D

ContInfo-System

ContInfo, the electronic monitoring sys-

tem offered by AUMUND prevents sys-

tem failures and essentially contributes to

an efficiency increase of complete convey-

ing systems. All relevant operating condi-

tions are monitored by means of sensors.

The central processing unit compares

actual values to setpoint values which are

initially entered as limit values.

By means of a display or an online con-

nection in the control room, the

operator can check the current status.

A short-time storage saves current data of

the operating conditions of the last 15

min. continuously. In case that the limit val-

ues are exceeded or in case of deviations

from normal operating conditions, the

data are transferred to the long-time stor-

age with a memory for several years. In

case of sudden failures, valuable data can

then be retrieved. Besides, the system

offers the chance to realize a preventive

failure diagnosis by way of long-term stud-

ies and to avoid technical defects.

Maintenance or service related messages

conditioned by actual operating hours and

based on experienced values or values

determined by AUMUND, are displayed

and/or transmitted to the central control

room.

Straight running of the belt, speed, operat-

ing temperatures, oil levels, no-load power,

normal power and max. power, etc. can

also be checked and analysed, in order to

guarantee trouble-free operation.

• Prevention of failures and analysis,

if necessary

• Optimizing the operating time of

conveying systems

• For bucket elevators and pan

conveyors

Central Processing Unit

Monitoring

functions

Motor power Motor bearing damage Hydraulic coupling Gearbox oil temperature and level Gearbox bearing damage Drive shaft bearing damage

Belt shitfting max. Belt shitfting continuous Belt temperature Belt clamping connection

Filling level - elevator boot Speed monitor Tensioning control

Maintenance intervals

Short-time storage

of all data

for failure analysis

Long-time storage

of data

in case that the normal

operating values are exceeded

Electronic Monitoring System Type ContInfo

Belt splicing is made with a clamp connec-

tion. The clamps are made of aluminium

which makes them lighter. With simple

textile belts which are used for small buck-

et elevators and lower material tempera-

tures, it is sufficient to bolt the clamps.

Steel-wire reinforced belts, however, which

have to stand extreme service conditions,

are additionally equipped with with a cast-

ing compound box. The rope ends are

connected by means of clamps and then

cast with a special casting compound.

For belt bucket elevators, AUMUND uses

special steel-reinforced belts with a belt

thickness of 13 to 15 mm even for the

highest strength class. Due to this compar-

atively low belt thickness, smaller pulley

diameters can be chosen.

Depending on the strength class, longitudi-

nal steel ropes with a diameter of 2.8 up

to 4.4 mm and arranged at a distance of 5

to 8 mm are applied as traction elements.

Together with the additional cross ropes,

they form a rigid network structure ensur-

ing the high resistance that prevents the

bucket fixing screws from tearing off.

Depending on the strength class, the cross

ropes are either provided on one or on

both sides.

AUMUND developed a special belt

punching tool which cuts off two ropes

only for each hole. This reduction of the

traction strands is, of course, considered in

the calculation of the belt strength. For the

belt covers, heat-resisting rubber com-

pounds yielded the best results.

• Continuous operation with low

main-tenance requirements

• Standard safety equipment: level

control, parallel tensioning device,

speed monitor

• Compact buckets

• High tensile strength of the steel-

reinforced belts by means of

longitudinal and cross ropes

• Creep drive for maintenance

• Segmented friction linings

• Belt-centering design of the

drive pulley

Steel reinforced elevator belt

Belt clamp connection Type DR Standard type

Steel-reinforced belt Textile belt

Upper cover – carrying side Upper cross rope Longitudinal rope (traction element)

Bottom cross rope

Bottom cover – backing

Belt Bucket Elevator Type BW-G

The indicated conveying capacities correspond to a 100% bucket filling (water filling). · Recommended filling degree: 75%. Preferred sizes

Bucket Theoretical capacity m^3 /h Width Protru- Volume Speed Bucket spacing mm Conveyor speed sion m/s without hydraulic coupling ø Pulley mm mm dm^3 mm 240 280 320 360 160 160 1.9 1.00 29 24 21 200 160 2.4 500 36 31 27 250 220 5.2 84 73 65 315 220 6.6 1.25 106 93 83 355 220 7.4 630 119 104 93 400 220 8.4 135 118 105 Bucket Theoretical capacity m^3 /h Width Protru- Volume Speed Bucket spacing mm Conveyor speed sion m/s without hydraulic coupling ø Pulley mm mm dm^3 mm 320 360 400 440 480 520 560 400 280 14.5 1.37 223 199 179 500 280 18.0 800 277 247 222 630 320 29.0 447 402 365 335 800 320 37.0 1.54 570 513 466 427 1,000 320 46.0 1,000 708 638 580 531 1,000 360 58.0 1.72 898 816 748 691 1,250 360 73.0 1,125 1,180 1,027 942 869 800 360 46.5 787 715 656 605 1,000 360 58.0 1.88 981 892 818 755 1,250 360 73.0 1,250 1,235 1,123 1,029 950 1,400 400 99.0 1.88 1,523 1,396 1,289 1, 1,600 400 114.0 1,250 1,754 1,607 1,484 1,

Belt Bucket Elevator Type BW-G

AUMUND Fördertechnik GmbH Saalhoffer Str. 17 47495 Rheinberg Tel.: +49 - (0)2843 - 72 0 Fax: +49 - (0)2843 - 6 02 70 e-mail: [email protected] www.aumund.com

LOUISE Fördertechnik GmbH & Co.KG Saalhoffer Str. 17 47495 Rheinberg Tel.: +49 - (0) 2843 - 925 - 5 fax: +49 - (0) 2843 - 925 - 600 e-mail: [email protected] www.louise.de

SCHADE Lagertechnik GmbH & Co.KG Dorstener Straße 360 44653 Herne Tel.: +49 - 2325 - 58 74 0 Fax: +49 - 2325 - 58 74 74 e-mail: [email protected] www.schade-lagertechnik.com

AUMUND Ltd. Ryton House, 7 Lane Head Ryton,Tyne & Wear NE40 3NA Tel.: +44 - 191 - 413 8077 Fax: +44 - 191 - 413 6379 e-mail: [email protected]

B&W Mechanical Handling Ltd. Lancaster Way Ely, Cambridgeshire CB6 3NP Tel.: +44 - 1353 - 665 001 Fax: +44 - 1353 - 666 734 e-mail: [email protected] www.bwmech.co.uk

AUMUND France S.A.R.L. 53, Rue d`Hauteville 75010 Paris Tel.: +33 - 1 - 42 46 72 72 Fax: +33 - 1 - 42 46 72 74 e-mail: [email protected]

AUMUND Polska Representative Office ul. Lektorska 34 G 44-210 Rybnik Tel.: +48 - 32 - 426 3211 Fax: +48 - 32 - 426 3201 e-mail: [email protected]

AUMUND Contracting AG Löwenstr. 55, Postfach 8023 Zürich Tel.: +41 - 1 - 215 68 68 Fax: +41 - 1 - 215 68 70 e-mail: [email protected] www.aumund-contracting.com

AUMUND AG Ober Altstadt 32a, Postfach 6301 Zug Tel.: +41 - 41 - 710 10 82 Fax: +41 - 41 - 710 42 02 e-mail: [email protected]

AUMUND Ltda. Rua do Rocio, 220-5°, andar - Conj. 52 Edif.Atrium - VI Olimpia Cep-04552-903 Sao Paulo, SP Tel.: +55 - 11 - 3046 4800 Fax: +55 - 11 - 3046 4801 e-mail: [email protected]

AUMUND Corporation 2500 Windy Ridge Parkway Suite 450 Atlanta, GA 30339 Tel.: 1 - 770 - 226 - 95 78 / 80 Fax: 1 - 770 - 953 - 48 44 e-mail: [email protected]

AUMUND Engeneering Private Ltd. 2nd Floor, Lakshmi Neela Rite Choice Chambers 9,Bazulla Road,T.Nagar Chennai - 600 017 Tel.: +91 - 44 - 815 60 48 / 49 Fax: +91 - 44 - 815 60 46 e-mail: [email protected]

AUMUND (China) Representative Office Room 909, East Ocean Center, No.24A Jian Guo Men Wai Street, Chao Yang District Beijing 100004 Tel.: +86 - 10 - 65 15 58 13 / 14 Fax: +86 - 10 - 65 15 58 15 e-mail: [email protected]

Germany

Great-Britain

France

Poland

Switzerland

Brazil

USA

India

P.R. China

www.aumund.com

The AUMUND Group

GB

Subject to modification 10-