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1. DEPARTMENT OF MINING ENGINEERING
WIRE ROPES
PRESENTED BY =PRAKASH

2.  INTRODUCTION
 WIRE TESTS
 TYPES AND CONSTRUCTION OF
WIRE ROPES
 USES OF WIRE ROPES IN FOLLOWING
REASONS

3.  Ropes are made from steel wires of plain
carbon steel having high tensile strength.
 The ultimate tensile/breaking
strength=65kgf/mm^2
 Wire used for haulage/winding ropes=140
kgf/mm^2 to 170kgf/mm^2.

4. Fig:-1. PART OF WIRE ROPE.

5. 1. Tensile test
2. Torsion test
3. Bending test
4. Wrapping test
5. Looping test

6.  Such ropes are classified as.
1. Standing ropes
2. Running ropes
 Basis of construction wire ropes
1. Strands ropes
2. Non strands ropes

7.  Strands and each strands consist of a
number of concentrically twisted wire laid in
the form of helix round a centre wire.
 Wire ropes are designated= 6*7
 Flexibility of strands depend upon.
1) Types of core.
2) thickness of individual wire.
3) Number of wires.

8. A. Fibre core.
B. Streel strand core.
C. Independent wire
rope core.
o Mostly fibre core
are used in
winding /haulage
ropes.
Fig:-2.

9.  There are two types of lays.
1. Right hand lays.
2. Left hand lays.
o Further divided in two parts.
1. Ordinary or regular lays.
2. Lang’s lays.

11. o Outer layer consist of round wire placed
between specially shaped wire of I section .
o Rope surface is smooth and plane.
o Non spinning.
o
 Locked coil ropes

12. ADVANTAGE DISADVANTAGE
 Used in sinking shaft
where guide ropes are
not installed.
1. Construction difficult.
2. Interior cannot be
lubricated from
outside.
3. Cannot be spliced.
4. Its is not so flexible.

13. Top row:- Flattened strand
ropes
Middle row:- Lock coil ropes
Bottom row:- Spiral strands
Fig:-3. Described ropes

14.  USES OF WIRE ROPES IN FOLLOWING
REASON
1. Easy to handle.
2. Longer life.
3. Balanced load on strands.
4. Broken wire lie flat.
5. More easy spliced.
6. Less liable to kink.

15.  D.J. DESHMUKH VOL. 3
 GOOGLE IMAGES

16. Any questions…….?