TRUCKS & HAULING EQUIPMENT - UPJ...Truck speed at gross v .weight 75000-76500 = 13 mph The haul...
Transcript of TRUCKS & HAULING EQUIPMENT - UPJ...Truck speed at gross v .weight 75000-76500 = 13 mph The haul...
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TRUCKS & HAULING EQUIPMENT
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Lecture 3
Ferdinand Fassa TSP-308 MPK
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OUTLINE
1. Introduction
2. Classification of Trucks
3. Factors Affecting Haulers’ Productivity
4. Calculating Truck Productivity
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1. Introduction
Trucks are hauling units that
provide relativity low hauling cost.
The productive capacity of a truck
depends on size of load an the
number of trips it can make in an
hour
Truck function: in transporting
excavated material, processed,
aggregates and construction
material
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HAULING:
To Haul/Transport Dirt (on/off road) over a Long Distance
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Method of dumping the load
Rear-dump
Bottom-dump
Side-dump
Articulated dump truck
Capacity
Gravimetric: carried load expressed as weight in tons
Volumetric/struck volume: carried load expressed as
volumetric amount in cubic meter/cubic yard
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2. Classification of Trucks
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Method of dumping the load
5 Type of Dump Truck
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Dump Trucks
Bottom Dump Truck
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Side Dump Truck
Articulated Truck
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Volvo Truck Family
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When it comes to
perfomance
SIZE DOES MATTER
930E Komatsu
Empty 200 tons
Loaded 500 tons (211 M3)
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Type of frame
10 Type of Dump Truck
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Types and characteristics of soils
Payload (volume / weight)
Empty vs. Loaded
Roads
Haul – Return
Grades
Distance
Efficiency and condition of equipment
Efficiency and condition of work
Loader’s Capacity / Productivity
3. Factors Affecting Haulers’ Productivity
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Loading and Hauling Cycle
spreading hauling
return
Compacting
(shrinkage)
excavation
loading
Loosening
(swelling)
Loading
Cycle
Hauling and
Dumping
Cycle
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4. Calculating Truck Productivity (1)
Analyzes the performance of 22 ton rear dump trucks being loaded by hydraulic hoe having 3 cy bucket and the hoe should be able to cycle in 20 sec.
Rear dump trucks with specification as follow are used to haul sandy clay material.
Struck, 14.7 cy
Heaped 18.3 cy
Net weight empty =36.860 lb ; speed 22 mph
Payload/muatan = 44.000 lb
Max Gross vehicle weight = 80.860 lb
Truck speed at gross v. weight 72000-73000 = 16 mph
Truck speed at gross v. weight 73000-74000 = 15mph
Truck speed at gross v .weight 74000-75000 = 14 mph
Truck speed at gross v .weight 75000-76500 = 13 mph
The haul route from loading point to the waste site is 3 mile
Dump time 2 min, the sandy clay has a loose unit weight of 2,150 lb/cy
Efficiency estimate for this work is a 50 min hour
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5 bucket
gross v. weight= 36860 + 35475 72335 lb
6 bucket
gross v . Weight = 36860 + 39345 76205
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gross v. weight= empty truck net weight + weight of load
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STEP 6
Truck Cycle Time
TCT = (LT + HT + DMT + RT)
5 Bucket = 1.7 + 11.3 + 2.0 + 8.2
= 23.2
6 Bucket = 12.0 + 13.9 + 2.0 + 8.2
= 26.1
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4. Calculating Truck Productivity (2)
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4. Calculating Truck Productivity (2)
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Safety First!!!!
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THANK YOU
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