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IS 14567 (1998): Winding in mines - Design of cages Guideline [MED 8: Mining Techniques and Equipment]
“!ान $ एक न' भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
“Invent a New India Using Knowledge”
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता ह”
है”
ह
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”
IS 14567 : 1998
Indian Standard
WINDING IN MINES DESIGN OF
CAGES GUIDELINES
ICS 55.200
I3 U R E A U
h4ANAK
OF
BHAVAN,
INDIAN
,STANDARDS
‘3 BAHADUR
SHAH
NEW DETLHI I 10002
ZAFAR
MARC;
Price Group 2
Mining
Techniques
and Equipment
Sectional
Committee,
HMD 8
FOREWORD
This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the Mining
Techniques and Equipment Sectional Committee had been approved by the Heavy Mechanical Engineering
Division Council.
Cages are important components of the suspension arrangements used in mining operations. They are the
actual payload bearing component in whole of the cage suspension arrangement.
Accordingly,
design of
the cages has to be carefully looked into, to avoid accid.ents.
Various types of cages are in use in mining industry. Most commonly used cage is single deck six-point
suspension cage without balance rope. Other types of cages that have found greater adoption in the Indian
mining industry are:
a)
Cages
with balance
rope (with friction
or drum winding)
1) Single deck cage (with single/multi-point
2) Multi-deck
cage (with single/multi-point
b)
Cages
without
1) Single
balance
suspension)
suspension)
ropes (with drum winding
deck cage (with single/multi-point
The Coal Mines Regulations,
Mines Regulations, 1961 lay down specific provisions
shall be duly taken care of during the design of the cages or other means
are reproduced below for the guidance of users:
A)
THE
1)
Regulation 73(l) - Every part of a winding installation including head gear shall be of sound construction
and adequate strength and shall be maintained in safe working order.
2)
Regulation
i) covered
MINES
suspension)
1957 and The Metalliferous
regarding cages. These provisions
of conveyance.
These provisions
COAL
only)
REGULATIONS,
76(10)(a) completely
Every cage or other means
of conveyance
in which persons
ride shall be:
at the top.
ii) closed in at the two sides in a manner
the sides.
iii)
1957
sufficient
to prevent persons or things from projecting
provided with a rigid hand-bar (rails) fixed in position
in the cage or other means of conveyance.
iv) provided with suitable
means of conveyance
members of the gate
and they shall be so
beyond
where it can be easily reached by all persons
gates’or rigid fences such that the gap between the floor of the cage or other
and the gate or fence does not exceed 150 mm and that between any two
or fence does not exceed 250 mm. Gates or fences shall not open outwards
fitted and maintained
that they can not be accidentally
opened.
3)
Regulation 76(10)(b) - The floor of every cage or other means of conveyance
shall be strongly
constructed and so maintained as to prevent any part of the body of a person riding in the cage or
other moans of conveyance
from projecting beyond the cage floor.
4)
Regulation 78(l) - Every cage used for raising or lowering of tubs shall bc provided with catches
or other effective contrivances
to prevent tubs falling out. The cage shall not be set in motion unless
the catches or other effective contrivances
are in operating position.
5)
Regulation 78(2)(a) - The floor of every cage shall be kept clean
be filled to such a height that an 11 of the contents can fall out.
and no skip, bucket or tub shall
IS 14567 : 1998
Indian Standard
DESIGN
WINDING IN MINES CAGES GUIDELINES
I SCOPE
5 DESIGN
This standard covers the guidelines
for design of
single deck cage
with multi-point
suspension
at-lmngemcnt and multideck cage with single point
suspensions
arrangement.
5.1 Single
2 REFERENCES
Following load conditions
design of the cages:
51.1
Code of practice for general construction in steel (sccnnd revisinn)
x500 : 1092
5.1.1.2
Glossary of mining terms (shaft and
associated equipment)
Structural
(medium
quaht1es)
Deck Cage
Load conditions
steel - Microalloyed
and
high
strength
(first revisian)
a) Self weight
in the
b) Weight
of the cage
-
A, kgflcml
of the total persons
-
B, kgf/cm2
the cage
Fol- the purpose of this standard, terms and definitions
gtven m IS S814 shall apply.
c) Weight
4 GENERAL
d) Weight of loaded
with coal/stone
of loaded
mine
car
-
C, kgf/cm2
mine
tub -
0, kgf/cm*
with coal/stone
REQUIREMENTS
4.1 The welded joints of the structure shall be checked
for their whole length for welding strength. All welded
joints shall also be tested by non-destructive
testing
methods for any harmful dcfccts.
5.1.1.3 Total load (say P kgf/cm*) on the cage
considered for the design of the cage shall be the
maximum load out of the three alternatives given
below:
A, + B, or
4.2 Welding shall be done by Class 1 welder. All
residual stresses shall be relieved after welding and
no welding dcf’ccts/cracks shall be allowed. Suitable
non-destructive
tests shall be carried out to check
for the defects/cracks.
A, + C, or
A, + n,
5.2 Multideck
4.3 The fabricated cage shall be subjected to trail
loading at the manufacturer’s premlaes and all defects
bc
shall be considered
Loads on cage
withm
I
1)
Assuming no balance rope is used, following loads
act on the cages which are considered for the design
of the cages:
3 TERMINOLOGY
shal
(see Fig.
a) When the cage is hanging with full weight
with
b) When cage is sitting on keps/platform
full weight
C> When cage is sitting on catches
d) When the cage is suspended from bell plate
Title
5x14 : 1970
REQUIREMENTS
With SiK Point Suspension
5.1.1.1
‘Ihe I’ollowrng Indian Standards are necessary adjuncts
to this slandard:
OF
52.1
I-ect1l‘red.
With Single
5.2.1.1
4.4 The ccntrc of gravity of empty cage shall be at
the rope ccntrc. ‘I‘hla shall hc verified during trail
01 tllc I‘nl~~cated cage at the workshop.
Cage
Point Suspensions
Load wnditiorks
Following load conditions
design of the cages:
shall be considered
a) When the cage is hanging
4.5 Suitable anti-cnrrosivc
protective paints shall be
applied as per rclcvnnt Indian Standards.
b) When the: cage IS sltting
with full we;ght
-
4.6 Hand ~ratlx should bc providccl vn both sides 01
ihc cage 101. cvc,-y deck.
J) When the cage is suspended
c) When
I
(see Fig. 2)
cage is sitting
in the
with lull weight
on
keps/platl’orm
.
on catches
from hell platt:
IS 14567 : 1998
6PT.
BOTTOM
SUSPENSION
FRAUE/
ENGTH
OF THE
CAG
FIG. 1 TYPICALSINGLEDECK CAGE WITH SIX POINTSUSPENSION
TOP
FRAME
/-
WE
DOOR
TRACK
-CAR/TUB
SUSPENSION
/
LENGTH
Of
CAGE
POltil
FOR
IS 14567 : 1998
5.2.1.2
Lauds
Assuming
XI
011
6.2.2 Loud Conditions
cup?
no balance
rope
on the cages which
is used,
are considered
following
loads
for the design
Self
b)
weight
Weight
d)
of
the cage
persons
A, kgf/cm’
R, kgf/cm’
Weight
of loaded mine
car with coal/stone
--
C‘, kgf/cm’
Wclght
~- II,
tub
of the total
--
wlthm
c)
the cage
with
of
loaded
mine
kgf/cm’
coal/stone
considered
maximum
load (say Q kgl’/cm’)
on the cage
for the design of the cage shall be the
load out of the three alternatives
given
A, + I$, or
6 GUIDELINES
ELEMENTS
hanger shall be analysed which shall not be greater
than one-thirtieth
01. the ultimate
tensile stress.
FOR DESIGN OF DIFFERENT
used
be high
Slenderness
for
tcnsllc
the
manufacture
of
steel
conforming
to
rho
this
ratio
is less than
Vertical
6.2.3.4
In this cage the roof frame is subjected to compression
However there would be a little bending cffcct
due to the sell’ weight of roof frame which is negligible.
The load, causing the compression of the end channels
and the longitudinal
channels,
shall he analysed.
Accordingly.
the 1,/R ratio and the factor of safety
and
malntained
200.
Stijfr~ess
stlffcners
shall
bc used
the horizontal
rigidity
The hangers shall bc rigidly
top frame, bottom frame
only.
IS
material
lo increase
Loud C‘onditiorr 5.1.1.1(a)
hc calc~~lnrccl
The
hanger shall
IS X500.
6.2.3.3
Roof Frame
Wllll
Under these conditions,
the hangers are sub.jected to
tension. Accordingly
tensile stresses developed in the
that
A, + D,
shali
5.2.1.1(d)
The cross sectjon of the hanger shall hc so selected
A, + C, or
6.1.1
Load Conditimv 5.1.1.1(c), 5.1.1.1(d), 5.2.1.1(c)
6.2.3
ad
6.2.3.2
bCl~,W.
6.1
In this case, the hangers arc not sub_jcctcd to any
significant
load as the cage is sitting on the kcps/
6.2.3.1
Total
5.2.1.3
und 5.2.1.1(b)
platform.
of‘ the cages:
a)
5.1.1.1(h)
in cross
direction
of the side plates.
fastened/welded
with the
and side plates.
Side plutcs
Side plates of’ aI least 3. IS mm thickness (without
perforation)
shall be used at both sides of the cage
to prevent oh.jects falling into the shafts. For inspection
of guide
ropes,
an opening
of 2.50 mm x 250
in line with the guide ropes may be provided
sliding
arrangcmcnts
for closing
mm
with
the opening.
in accordance
x00.
6.1. I. 1 Rernovuble lypc 01‘ intcrmedlahz decks may
he duaigncd in LXX of multi-deck cages if‘ long muter~al
;I~L’ lo hc Ir;insporled
by the cages.
6.3
‘I‘hc deck
space above
6.4
shall
have
it to cnablc
Intermediate
stiffcncrs
shall be used at regular
chcqucrcd
at least
persons
along
Interval
1.9 m clear head
to stand.
the width
of cage
fur ~r~gldlty 01 the
plate.
In this case, any significant
load is not acting on
the I-ool‘ I‘ramc as the cage is sitting on the keps/
6.2
Ma11gers
Rails, if any, shall be fixed al proper gauge rigid11
to the floor along with check rails for the npproprlatt
mine car/tub. The chequcrcd plate used for flooring
shall IX at Icast 6 men thick and properly \ccurcL
6.2.
I I.cmd (‘orfditlnf1.s 5.1.1.1(a) atzd 5.2.1.1(a)
6.5.1
platl~ol
Ill
111 1111scast, the hangcIs are sub:jccted 10 tcnsmiI.
Ac,cortlinply
analysis shall be carrlcd out Ivr ~~llc
~IIX~\S developed
in the hanger which shall not bc
~~I-v:I~c’IIhan on+rcnrh
of rhc ultimate tensile stress.
.P
6.5
II’rails are provided,
he provided in the floor
car/tub catcher units shall
6.52
In cast 01’ multideck cages, the provi:;iona 01‘
6.5 shall be provided at each intcrmcdi;rtc floot.:;ltl~~~ I\
ol’ lhr cages
(Contitued
from
second
cover)
A)
THE METALLIFEROUS
1)
Regulation
construction
SO(l) - Every part of a winding part of a winding installation head gear shall be of sound
and adequate strength and shall be maintained in safe working order.
2)
Regulation
84(11)(a) -
i) covered
completely
MINES REGULATIONS,
Every
cage or other means
1961
of conveyance
in which persons
ride shall be:
at the top.
ii) closed in at the two sides in a manner
the sides.
sufficient
to prevent persons or things from projecting
beyond
iii) provided with a rigid hand-bar (rails) fixed in a position where it can be easily reached by all persons
in the cage or other means of conveyance.
iv) provided with suitable gates or other rigid fences such that the gap between
or other means of conveyance
and the gate or fence does not exceed 150
any two members of the gate or fence does not exceed 250 ,mm. Gates or
outwards and they shall be so fitted and maintained that they can not be
the floor of
mm and that
fences shall
accidentally
the cage
between
not open
opened.
3)
Regulation 84(11)(b) - The floor of every cage or other means of conveyance
shall be strongly
constructed and so maintained as to prevent any part of the body of a person riding in the cage or
other means of conveyance
from projecting beyond the cage floor.
4)
Regulation 86(l) - Every cage used for raising or lowering of tubs shall be provided with catches
or other effective contrivances
to prevent tubs falling out. The cage shall not be set in motion unless
the catches or other effective contrivances
are in opefating position.
5)
Regulation 86(2)(a) - The floor of every cage shall be kept clean and no skip, bucket
be filled to such a height that any of the contents car/fall
out.
For the purpose
value, observed
with IS 2 : 1960
in the rounded
or tub shall
of deciding whether a particular requirement of this standard is complied with, the final
or calculated, expressing the result of a test or analysis, shall be rounded off in accordance
‘Rules for rounding off numerical values (revised)‘. The number of significant places retained
off value should be the same as that of the specified value in this standard.
Bureau
of Indian
Standards
BIS is a statutory institution established under the Bureau of Indian Standard Act, 1986
harmonious development of the activities of standardization,
marking and quality certification
attending to connected matters in the country.
to promote
of goods and
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has the copyright of all its publications. No part of these publications may be reproduced in any form
without the prior permission
in writing of BIS. This does not preclude the free use, in the course of
implementing
the standard, of necessary details, such as symbols and sizes, type or grade designations.
Enquiries relating to copyright be addressed to the Director (Publications),
BIS.
Review
of Indian
Standards
Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed
periodically;
a standard along with amendments is reaffirmed when such review indicates that no changes
are needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian
Standards should ascertain that they are in possession of the latest amendments
or edition by referring to
the latest issue of ‘BIS Handbook’ and ‘Standards: Monthly Additions’.
This Indian
Standard
has been developed
from Dot
Amendments
Amend
No.
OF INDIAN
Text Affected
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