mat. handling equipment

8/2/2019 Mat. Handling Equipment

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Principles of MaterialHandling

Planning Principle

Operating Principle

Equipment PrincipleCosting Principle

General Principle


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Planning Principle

1. Plant Layout principle2. Delegation of responsibility principle

Separate Dept.

Operators not for mat. handling

Mat. not lifted manually beyond waist height

Over 20 kgsmechanical system

3. Minimisation of re-handling principle

move to point of use

Proper height

Non mixing of sorting mat.

No twice movement of mat. in same direction.


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4. Space Saving principle - cubic content

Non spreading of mat. on floor

Palletisation and stocking

Congestion retards flow

Space costs moneyuse monorail devices


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Operating Principles

1. Unit load handling principle Bulk/Lots : Pallets, Trolley

Tray, Piling.

2. Gravity principle Roll or slide down

3. Flow of materials principle

Steady flow

Straight Path

Minimum backtracking


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Equipment Principles

1. Mechanisation principle

Reduces handling cost, speed, safety,productivity.

Heavy Materials Continuous labour cost eliminated

All considerations: cost, flexibility, time, volume

2. Terminal time principle Waiting time: pickup and put down time

Palletisation and unit load


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3. Dead Weight principle

Ratio of load handled to dead weight of

equipment.

minimum dead weight

Weight of trays, trolleys and pallets

4. Standardisation principle

Interchangeability

Reduces investment in spares inventory

Reduces maintenance and repairs cost


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5. Maintenance principle

Systematic maintenance

Preventive maintencance

Impact of machine failure

6. Speed principle

Pallets of square in shape: fork entry in any side

Two way traffic route

Gangways clear

Sufficient supply of boxes, pallets, containers toeliminate waiting


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Costing Principles

1. Equipment selection principle Most flexible: min. operating cost

Equipment selection decision

2. Replacement principle Economic retentive period

Repair cost

Breakdown cost

3. Handling cost appraisal principle

Periodic analysis of mat. handling costs

highlights areas of improvement


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General Principles

1. Safety principle

Hot material

Gangways lighted and unobstructed

Operators well trained Aisles wide

Safety regulations

2. Training principles

Basic training to every employee Effect of MH on product cost and quality

At end of operation job positioned such that it is ready tomove.


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3. Identification principle

Labelling on pallets and boxes Bar code system

4. Location principle

MHE placed at right place and right time

5. Material treatment principle

Scarp and end pieces

Low value bulky mat.cost


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Selection of mat. handling equipment

Mat. to be handled

Plant buildings

Layout

Speed requirement

Mat. flow pattern

Method of production

Distance moved

Safety requirement

Installation and operating cost

Flexibility


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Belt Conveyor


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Belt Conveyor


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Roller Conveyor


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Screw Conveyor


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Screw Conveyor


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Monorail conveyor


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Monorail Conveyor


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Vibrating Conveyor


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Oscillating Conveyor


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Hand operated tuck


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Fork Lift Truck


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Tractor Trailer


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Hoist


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Gentry Crane


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Jib Crane


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Ropeways


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Slides and Chutes


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Lifts


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Tractor and Trailer


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Objectives of mat. handling

Speed and economy

Min. cost

Prevention of damages

Safety Min. fatigue and labour

Improvement in productivity

Higher plant efficiency

Greater utilization of MHE

Good Housekeeping

Lower investment in WIP


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Symptoms of Poor MH Production losses due to delays

Long queues Congestion

Material damage

Skilled labour: MH operations

Piling of WIP Over crowded floor areas

Mat. mixups

Frequent breakdown of MHE

Excessive loading and unloading time

Aisles/ passages blocked

Bad housekeeping

mat. handling equipment

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