The document discusses specifications for a single axle drop pit table and guidelines for its construction and installation. It provides drawings and photos of drop pit tables installed at locomotive sheds. Key details include the pit dimensions of 2650mm width and 5000mm depth selected to accommodate a service table sized 2.4m x 4.5m. Maintaining tolerances for level and alignment of pit and shop rails is important to achieve a gap of less than 10mm between locomotive and service table rails. General arrangement drawings and lock bar designs are based on sample pit drawing number 000276 from Jodhpur.

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UNIQUE INDUSTRIAL HANDLERS PVT.LTD.
Plant- I : E-77, MIDC, AMBAD, NASHIK
Plant-II : E-66, MIDC, AMBAD, NASHIK
Plant-III : GONDE DUMALA
Welcome to Unique Industrial Handlers Pvt.Ltd.
Objective of this presentation is to discuss the
DROP PIT TABLE &
GUIDELINES FOR CONSTRUCTION OF PIT
APPROVAL OF GAD AND DRAWING FOR LOCK BAR
Guidance is taken from COFMOW Specifications / Drawings and Photos taken
for
DPT being installed at GOOTY & HUBLI Loco-shed

2. SINGLE AXLE DROP PIT TABLE (WITH SERVICE TABLE)
UNIQUE INDUSTRIAL HANDLERS PVT.LTD.
VIEW OF BASE FRAME WITH MACHINERY
COMPLETE ASSEMBLY OF SINGLE AXLE DROP PIT
TABLE (WITH SERVICE TABLE) READY FOR LIFTING

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4. BASE FRAME WITH MACHINERY LAYOUT
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NOTICE COMMON MOTOR DRIVING ALL 4 SCREWS

5. 3D VIEW OF SERVICE TABLE ASSEMBLY
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NOTICE LOCK ARRANGEMENT PROVIDED FOR PARKING SERVICE TABLE

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3D VIEW OF SERVICE TABLE ASSEMBLY WITH DOLLY
NOTICE LOCK EXTENDED (PROJECTING) FOR PARKING SERVICE TABLE

7. 3D VIEW OF DOLLY
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DOLLY IS USED TO SUPPORT THE
TRACTION MOTOR DURING THE
PROCESS OF REMOVAL OF SINGLE
AXLE WITH TRACTION MOTOR

8. CLOSE VIEW OF SCREW NUT AND COLUMN
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NOTICE THE MODULAR CONSTRUCTION FOR EASE IN MAINTENANCE
& COLUMN CONSTRUCTION COVERING THE SCREW FROM THREE SIDES.

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BASIC REQUIREMENT FOR CONSTRUCTION OF PIT

10. UNIQUE INDUSTRIAL HANDLERS PVT.LTD.
PIT LAYOUT DRAWING
Distance between lines A to B and B to C to be decided by Consignee.

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PICTURES OF CIVIL WORK (IN PROGRESS) FOR DROP PIT TABLE
RAFT GETTING READY
PIT WALL UNDER CONSTRUCTION

12. UNIQUE INDUSTRIAL HANDLERS PVT.LTD.
PIT RAILS BEING LAID ON SOLE PLATES

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LOCK BAR POCKET ARRANGEMENT AT TRACK C
FOR PERFECT ALIGNMENT FOLLOW GOOD ENGINEERING PRACTICE

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GUIDELINES FOR INSTALLATION OF LOCK BAR POCKETS

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IMPORTANCE OF MAINTAINING HEIGHT & SHOP RAIL ADJUSTMENTS
NOTICE LIMITED CLEARANCE BETWEEN TOP OF
SCREW COLUMN & BOTTOM OF SERVICE TABLE.
NOTICE - SHOP RAIL CLAMPS REMOVED - TO ACHIEVE
ALIGNMEMNT & LEVEL AT EACH OF LOCO BAR LOCATION

16. UNIQUE INDUSTRIAL HANDLERS PVT.LTD.
IMPORTANCE OF MAINTAINING LEVEL OF PIT RAIL
To achieve gap
< 10 mm
– it is necessary to
maintain level
difference
between pit rails
< 1mm .

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UNIQUE INDUSTRIAL HANDLERS PVT.LTD.
S U M MA R Y
Based on the specifications in A/T. Pit drawing 0000276 / Conceptual drawing for
Drop Pit Table, and observations made by visiting existing installations, drawings
are prepared & submitted for Drop Pit Table, concomitant accessories – Service
Table, Dolly, Lock Bar Pockets for Pit size 2650 mm Width X 5000 mm Depth.
1) Pit width = 2650 is selected to install Service Table with Platform size as 2.4 M x
4.5 M for convenience to Technicians for removal of Single Axle with traction
Motor / for maintenance.
2) Pit depth = 5000 is selected, as shown in Sample Pit Drg. # 000276 received
with tender.
3) As per the modern trend Drag Chain (Energy Chain) arrangement considered
instead of CRD.
4) Consignee to ensure laying of Pit Rail and shop rail is done with tolerances in
level / location of rails to achieve perfect matching of rails with gap < 10 mm
between Loco Rails and Service Table Rails.
5) GAD / Lock Bar drawings are based on Pit dimensions as shown in BH-015-G-D-
DRG-000276 RA Jodhpur.
6) Before changing the dimensions of Pit (width / depth / End Length), effect of
changes on, Dimensions of Drop Pit Table and on technical parameter to be
considered & agreed by user & consignee.

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