Technical Specifications[1]

8/6/2019 Technical Specifications[1]

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TECHNICAL SPECIFICATION OF CONVEYORS

1. Description of Conveyor System:

Conveyors for conveying pipe line has two main structural systems, one the

Rigid Frame Structure and the other is Tri series Chain system. The frame

structure and chain drive system are rigidly fixed to each other in which the

three chains are driven on the rigid frame made of rectangular pipe

sections, C- channels, T-sections. The chains on the structural frame are

driven by 30hp geared motor.

This Pipe Conveying Structure Consists of following parts (as shown in Fig 1)

1. Rigid Frame Structure

2. Tri-series Chain

3. Sprockets

4. Rubber Sheets

5. Rollers



6. Bearings

7. 30hp Geared Motor

8. Height Adjustment System

We will be supply the complete Conveyor System as a set in an assembled

condition. We will be responsible for the assembly of rigid frame structure

with complete chain system and other sub systems. The complete design

development and drawings of the total project will be provided by us as per

your requirement .

2. Scope of Work :

(a) Designing and preparing the work plan for raw material for rigid frame

structure

(b) Fabrication of complete frame structure by using familiar MIG welding

techniques

(c) Assembling the chain in the rigid structure with sprockets. Fixing the

Rubber pads with special bonding to chain plates will be done.

(d) Setting of the 30hp motor in the rigid frame and connecting the motor

shaft with couplings to the linkage shafts of chain sprockets using

universal joints

(e) Setting the height adjustment using screw mechanism on the both

either ends of the conveyor structure



(f) Enclosing the total conveyor body with sheet metal and is painted

(g) Upto 10% deviation in the design and deliverables of the conveying

system will be catered by us

3. Manufacturing Process

(a) Rigid Frame Structure Manufacturing Process: The rigid frame structure

of the conveying system is a fabricated body with mild steel material

and different alloy steels. It consists of square and rectangular pipe

sections, c-channels, T-sections, etc,. which are machined with accurate

dimensions and welded with MIG welding process as per drawing

designed.

(b) Tri – Series Chain System:

This chain system consists of chain and sprockets assembled in perfectmanner. The chain is manufactured with pitch 50.80 mm and it is

designed with a breaking load of 45.8 to 47.8 tons. The tolerance in the

length of the chain will be 0.00 to +0.25%. The sprocket is manufactured

with 297mm diameter.



(c) Metal Bonded Rubber Pads:

The special metal bonded rubber pads are manufactured with

copolymer of butadiene and acrylo nitrile and generally named as nitrile

rubber, which is resistant to oil, abrasion and heat.

(d) Panel Board :

Each conveyor will have an individual pannel board with starter and

mcb’s , for geared motor. All the 10 conveyors are connected to a panel

board contains PLC from which all ten conveyors are controlled at a

time.

4. Machining:

We will use precision machinery such as CNC vertical milling machine, CNC

Lathe, MIG welding machine, etc,. The required Dies/Jigs/Fixtures and

gauges will be developed by us for machining purpose. The dimensional

tolerances, geometrical accuracies and surface finish will be maintained as

per drawing and specifications. Profiles will be checked on CNC profiles

measuring equipment and by profile gauge made out of SS material. All



components will be maintained as per dimensions and tolerances given in

the drawings.

5. Material Properties:

Chemical composition and mechanical properties for different alloy steels,

rubber, are given in Appendices

6. Progress Monitoring:

The work plan will be submitted by us before starting the work. The

progress of work will be reviewed regularly at our premises at variousstages of manufacturing.

7. Preparation of work piece:

The parts to be welded will be effectively pre cleaned and scratch brushed

with a stainless brush. Dirt, grease, Machining lubricants or any organic

matter will be removed from the areas to be welded by cleaning with

suitable solvent.



APPENDIX-I(A)

MATERIAL SPECIFICATION

Specification of Rubber Pads:

Polymer : Copolymer of butadiene and acrylo nitrile and

Generally named as nitrile rubber. Having

resistance to oil, abrasion and heat.

Hardness : 60-70

Tensile Strength, kg/cm2 : 100-120

% Elongation at break : 300-340

Modulus at 300% Elong. : 40-50

Compression : 20%

Specific gravity : 1.3(approx.)

Volume change in Fuel B : 50%

4 weeks at room temp.

Volume change in ASTM no.3

Oil 70 hours at 100 deg.c : 30%



Specifications of Planetary Geared Motor:

Model : MR 3E 446 FC 2C ----180L-4-230..400../B3

Ratio : 192

Output Speed : 7,31 rpm

Service Factor : 1.8

Delivered Torque : 2615daNm – 26150Nm

Nominal Torque : 6500da Nm

Peak Torque : 7750 da Nm

Efficiency : 91%

Type : Foot Mounting

Output : Solid Cylindrical shaft

Mounting : B3 Horizontal



Motor Specification:

Power : 22 KW

Speed : 1465

Frame : 180L

Poles : 4

Phase : AC, 3PH

Duty : Continous – S1

Frequency : 50 Hz

Voltage : 230/400v

Protection : IP 55

Class : F-temp rise limited to class B

Efficiency : EFF2 – 90.8%



Load Calculation on conveyor:

Weight per meter of pipe : 1.2 tons

Weight of 12 meters of pipe : 14.4 tons @ 15 tons

Weight on 1 conveyor : 15 tons

Sprocket Dia(PCD) of chain : 276.46mm

Speed of the conveyor : 6 meter / minute

Speed = 3.1472 x D(meter) x N

N=speed/3.142x0.276=6.9rpm@7rpm

Considering coefficient of friction as 1.0

Torque = massxdistance(pcd/2(meter))=15000x0.13825=2073.45kgm force

Power= 2x3.1472xNxT/4500=2x3.142x7x2073.45/4500=20.25hp

Assuming power without assuming loss.

Factory of safety over power assumed 1.5 times

20.25x1.5=30.37HP@22KW

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Technical Specifications[1]