13056961 Maintenance Drive Mechanism

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" DRIVE MECHANISM "

PRESENTATIONPrepared by

Pradeep SinghIndustrial Engineering

Thapathali Campus

Thapathali, Ktm, Nepal

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Introduction

Drive mechanism is the process of transformingpower from one point to the other

Basically, there are four types of drive mechanisms

a. Belt Drive

b. Chain Drive

c. Gear Drive

d. Friction Drive

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Used for transforming power from one shaft to other which are at distant apartCan be used with high speed drives

Main disadvantage is slip and creep hence velocity ratiois not fixedThe cross-section of belt may be flat, v or other shape

Belt Drive

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Types of belt

According to materialo Leather o Rubber

o Balatao Textile or Fabric

According to structure

o Flat belto V belto Toothed belt

Fig: V belt

Fig: Toothedbelt

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Gear Drive

Used to transform rotary motion form one shaft toanother

Used for transmission of power and motion

Used for Positive drive i.e. to maintain constant velocityratio between shafts

Especially used when centre distance are relatively short

Comparatively, gear drives are more compact and canoperate at very high speed

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Types of Gear

Fig: Spur Gear Fig: Helical Gear

Pinion Gear Spur Gear

According to the position of axes of shaft

A. Gear with parallel axes

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Types of Gear

Fig: Spiral Bevel Gear

B. Gear with intersecting axes

Fig: Straight Bevel Gear

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Types of Gear

C. Gear with neither parallel nor intersecting axes

Pinion

Worm

Fig: Worm Gear

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Chain Drive

Belt built up of rigid links

Links are hinged together small wheel could be movedacross the surface of the largedisc giving an infinitelyvariable gear ratio .

This kind of engine is oftenused on scooters, mainly go-peds, in place of a chain,shaping machine, etc.

Fig: Chain

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Friction Drive

Friction Drive uses 2wheels on the engine to spinthe main wheel.

The small wheel could bemoved across the surface of the large disc giving aninfinitely variable gear ratio .

This kind of engine is oftenused on scooters , mainly go-peds, in place of a chain,shaping machine, etc.

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Friction Drive

Friction Drive uses 2wheels on the engine to spinthe main wheel.

The small wheel could bemoved across the surface of the large disc giving aninfinitely variable gear ratio .

This kind of engine is oftenused on scooters , mainly go-peds, in place of a chain,shaping machine, etc.

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Friction Drive

Friction Drive uses 2wheels on the engine to spinthe main wheel.

The small wheel could bemoved across the surface of the large disc giving aninfinitely variable gear ratio .

This kind of engine is oftenused on scooters , mainly go-peds, in place of a chain,shaping machine, etc.

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Thank You!!!