Daewoo DVN-8100N Instruction Manual download pdf (Page 15)

CHAPTER

III

STRUCTURE

AND

OPERATION

KTE-Nakashima

Side

Thruster

Model

TCT-220/200

has

such mechanism that with

pitch

control

lever,

pitch control push button equipped

in

wheel house control

panel,

and

both wing control

panel being operated solenoid valve

in

hydraulic pump

unit

is

operated,

the oil

transferred from

hydraulic pump

is

delivered into

OD box in the

inside

of the

thruster,

and the oil is

transferred

to

cylinder

through inner

bore

of

prop,

shaft

or OT

tube. Cylinder

is

made

up of

piston,

prop,

shaft

and

cross head.

The

movement

of

cross head

is

transmitted

to

sliding shoe

and

crank

ring successively,

and

then propeller

is

operated.

The

movement

of

propeller

is

transmitted

to

feedback

rod

through

OT

tube,

arm and

roller

chain,

the

movement

is

transmitted

to

potentiometer

in

feedback system,

and

then propeller pitch

is

indicated

in the

indicator

in

wheel

house

control panel

and

both wing control panel.

The

inside

of the

thrust unit

is

filled with lubricating

oil,

and is

always

supplied

with

a

little higher

head pressure than that

of

seawater.

The

lubricating

oil is

connected

to

header tank,

and if oil

leaks,

oil

level

in

header tank will decrease

and

alarming will

be

made with level switch

equipped

in

header

tank.

1.

Pinion Drive Shaft

Sub.

Assembly

("G.

A. OF

THRUST UNIT" DWGNO.

KJ(I)0000-***-*)

Rotation

transmitted

from

driving motor

will

be

transmitted through

SF

coupling(600)

to

pinion

drive

shaft(8),

the

rotation

is

transmitted

to

crown

wheelO),

this

pinion

drive shaft

being

geared

with crown wheel.

Thrust

load

and

radial load produced

in the

rotation

are

supported with

self-aligning

roller bearing(61), tapered roller

bearing(62)

and

thrust self

-aligning

roller bearing(63).

The

inside

of

gear

housingd)

filled with

lubricating

oil.

Oil

seal(82)

and

O-ring(85)

are

used

for

preventing

lubricating

oil

from

leaking,

moreover,

V

seal(81)

is

used against dust coming

into

oil

seal part.

2.

Propeller Shaft

Sub.

Assembly

("G.

A. OF

THRUST UNIT" DWGNO.

KJ(I)0000-***-*)

The

rotation transmitted from

pinion

drive shaft(8)

is

transmitted

to

crown

wheelO),

crown

wheel hub(10), key(33)

and

propeller shaft(7) successively. Crown wheel, crown wheel

hub,

propeller

shaft,

liner(11-1)

and

protection plate(15)

are

rotated, however, bearing housing(13),

mounting

plate(12)

and

shaft

sealing

device(11)

which

are

fitted

to

gear

housingd),

are not

rotated.

The

thrust

load

produced

in

propeller rotating,

the

thrust load produced

in

crown

wheel

rotating

and

radial load

of

propeller, propeller shaft

and so on are

supported with tapered

roller

bearing(58)

and

thrust

self-aligning

roller bearing(59). Besides, radial

load

of

propeller shaft

is

supported with

self-aligning

roller

bearing(GO).

Shaft

sealing

device(ll),

O-ring(87)(100)

and

gasket(11-80)(11-81)

are

used

for

preventing

lubricating

oil

from leaking

and

preventing ingress

of

seawater. Propeller shaft

is

protected

with protection

plate,

liner

and

O-ring(88)

against being rusted. Intermediate

cover(17)

is

for

preventing propeller shaft from being

winding

with ropes

or

seaweeds

or

marine

plants.

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