Sharp R-267LST Bedienungsanleitung PDF herunterladen (Seite 11)

4,309,917

5

DESCRIPTION

OF

PREFERRED

EMBODIMENTS

GEARING

The

transmission

has

a

cross

drive

train

10

(FIGS.

1

and

2)

and

a

control

system

11

(FIGS.

3A

to

SF).

Cross

drive

train

10

has

an

input

drive

12

which

is

connected

by

both

a

propulsion

drive 13

and

a

steer

drive

14

to

drive

the

right

and

left

output

drives

16

and

17.

In input

drive

12,

the

engine-driven

input

shaft

18'is

drive-con

nected

by

a

spur

gear type

lst

input

gearset

19

and

bevel

gearset

20

to

drive

the

cross

input

shaft

21.

The

lst

input‘

gearset

19,

in

the

preferred

arrangement,

provides

a

speed

increase,

so

cross

drive

train

10

can be

used

with

different

engines.

Bevel

gearset

20

provides

drive

fromv

the

axially

located input

shaft

18

to

the

transverse

or

cross input

shaft

21.

i

i

The

preferred

control

system

11 controls the

propul

sion

drive

13

to

provide

forward

and

reverse

drive.

Also,

in

input

drive

12,

cross

input

shaft

21

is

drive-con

nected

by

a

second

input drive

22

having

a

disconnect

clutch

24

connected

to

drive

a

2nd

input

gearset

25

for

driving

?nal

input

shaft

26

which

provides'one

of

the

two

inputs

for

propulsion

drive

13

and

the input

for

steer

drive

14,

as

explained

below.

TheZnd

input

gear

set

25

has

an

input

gear

27

rotatably

mounted

on

cross

input

shaft

21

and

driven

by

disconnect

clutch

24,

and

an output gear

28

driving

?nal

input

shaft

26.

,

Right

output

drive

16

has

a

planetary

output

gearset

29

having

an

input

ring

gear

30

mounted

on

anv

input

drum

31

which

is

driven

by

propulsion

drive

13,

and

an

input

sun

gear

32

which

is

driven

by

steer

drive

14.

Input

ring

gear

30

and

sun

gear

32

mesh

with

planetary

pinions

33

rotatably

mounted

on

carrier

34

having'a

drum

portion

35

and

being

connected

to

right

output

shaft

36.

The

right

output

brake

37,

preferably

a

fluid

operated

and

cooled

multiplate

brake,

is'located

be

tween

carrier

drum

portion

35

and

housing

38.

The

planetary

output

gearset

29

has

a

propulsion

drive

to

input

ring

gear

30

and

a

steer

drive

to

input

sun

gear

32

and

provides

a

differential

drive

to

right

output

shaft

36.

The

left

output

drive

17

is

a

mirror

image

of

right

output

drive

16

and

functions

in

the

same

way,

so

like"

reference

numerals

(primed)

have

been

used

(FIG.

1),‘

and

reference

is

made

to

the

above

description.

Propulsion

drive

13

is

a

synchronous

‘shifting

hydro

mechanical

transmission

functioning

to

provide

a

wide

range

of

continuously

variable

torque

and

speed

ratio'

drives

extending

through

three

gear

ratios,

and

is

simi

lar

to

FIG.

3

of

the

above

U.S.

Pat.

No.

3,982,448.

Propulsion

drive

13 has

a

propulsion

hydrostatic

trans

mission

39

having

a

pump

or

H1

and

a

motor

or

H2

LII

6

nected

to"-H1_

rotorv

shaft

56,

and

sun

gear

54

is

drive

connected

by

intermediate

shaft

57

to

H2

rotor

shaft

58.

Final input

shaft

is

differentially

drive-connected

by

lst

planetary

gearset

43

to

both

the

H1

and

H2

rotor

shafts

56

and

5,8.

The

2nd

planetary

gearset

44

has

planetary

pinions

61

rotatably

mounted

on

the

carrier

62

and

meshing

with

ring

gear

63

and

sun

gear

64.

To

establish

lst

ratio

range

drive,

the

fluid-‘operated

friction-type

lst

brake

65

is

engaged

to

hold

carrier

62

to

establish

a

speed

reduction

drive

from

intermediate

shaft

57

which

is

drive-con

nected

to

sun gear

64

and

provides

a

reduction

gear

drive

from

ring

gear 63

to

ring

gear

shaft

66.

V

The

3rd

planetary

gearset

45

has

planetary

pinions

67

rotatably

mounted

on

a

carrier

68

and

meshing

with

ring

gear

69

which

is

drive-connected

to

ring

gear

shaft

66,

and

sun

gear

71

which

is

drive-connected

to

inter

mediate

shaft

57.

To

establish

3rd

ratio

range

drive,

the

?uid-operated

friction-type

3rd

clutch

72

is

engaged

to

provide

a 3rd

ratio

drive

73

from

cross input

shaft

21

through

3rd

clutch

72

and

3rd

input

gearset

76

having

an

input

gear

77

on

a

clutch

shaft

74

and

an

output

gear

78

driving

carrier

68.

The

lst

output

gearset

47

has

an

input

gear

81

on

ring

gear

shaft

66,

and

an

output

gear

82

on

cross

drive

shaft

83

which

is

connected

to

drive

the input

ring

gears

30

and

30’,

respectively,

of

right

and

left

output

drives

16

and

17

for

lst

and

3rd

ratio

drives.

The

2nd

output

gearset

48

has

an

input

gear

86

?xed

on

H1

rotor

shaft

56

and

driving

output

gear

87

which

is

connected

by

2nd

clutch

88

(when

engaged)

to

drive

cross

drive

shaft

83

for

2nd

ratio

drive.

The

2nd

clutch

88

is

a

known

?uid-operated

multiplate

friction

clutch.

Steer

drive

14

has

a

steer

hydrostatic

transmission

89

having

pump

(P)

90

driven

by

?nal

input

shaft

26,

and

motor

(M)

91

driving

lst

steer

drive

shaft

92.

In

steer

drive

transmission

89,

the

hydrostatic

units

are

desig

nated

pump

(P)

and

motor

(M)

since

during

steer

drive,

the

power

transfer

is

from

?nal

input

shaft

26

to

pump

(P)

and‘

from

motor

(M)

to

1st

steer

drive

shaft

92.

The

steer.

drive

gearset

93

has

an

input

gearr94

on

lst

steer

drive

shaft

92,

connected

by

idler

gear

94'

for

driving

,

output

gear

95

and 2nd

steer

drive

shaft 96.

The

2nd

45

SO

hydrostatic

units

41

and

42,

and

lst,

2nd,

and

3rd

plane-

'

tary

gearsets

43,

44,

and

45,

and

1st

and

2nd

output

gearsets

47

and

48 of

the

spur

gear

type.

The

H1

and

H2‘

hydrostatic

units

are

known

pump-motor

units

as

shown,

for

example,

in

the

above

US.

Pat.

Nos.

3,274,946

and

3,752,010.

The

pump

and

motor

hydro

static

units

41

and

42

are

also

called

“H1”

and

“H2”

hydrostatic

units

because

at

times

H1

acts as

a

pump

and

60

H2

acts

as

a

motor,

and

at

other

times

H2

acts as

a

pump

_

and

H1

acts

as

a

motor,

depending

on

the

direction

of

‘

power

transfer,

as

pointed

out

in

the

description

of

the

operation.

'

"

i

The

lst

planetary

gearset

43

has

planetary

pinions

51

rotatably

mounted

on

the

carrier

52 and

meshing

with

ring

gear

53

and

sun gear

54.

Final input

shaft

26

is

drive-connected

to

ring

gear

53,

carrier

52

is

drive-con

65

steer

drive

shaft

96

is

connected

to

drive

cross

steer

shaft

97

by

a

steer

ratio

pack

98—which

may

be

a

direct

connection

providing

only

one

ratio

drive,

or

may

be

a

known

3-speed

transmission.

When

steer

ratio

pack

98

is

a

3-speed

transmission,

the

vehicle

operator

may

manu

ally

select

lst

speed

for

pivot

steer,

2nd

speed

for

nor

mal

steer,

and

3rd

speed

for

water

steer

by

track

drive

of

amphibious

vehicles.

The

3-speed

transmission

may

be

a

manual

or

powershift

type

transmission

having

countershaft

or

planetary

gearing,

or

a

hydromechani

cal

type

transmission

combining

3-range

gearing

with

steer'hydrostatic

transmission

89,

such

as

the

above

propulsion

drive

13.

The

cross

steer

shaft

97

and

right

steer

drive

gearset

101

and

left

steer

drive

gearset

102

provide

a

differential

steer

drive

103

respectively

to

right

and

left

input

sun

gears

'32

and

32'

of

right

and

left

output

drives

16

and

17.

Right

steer

drive

gearset

101

has

an

input

gear

104

driven

by

cross

steer

shaft

97

and

an

output

gear

105

driving

‘right

input

sun

gear

32.

Left

steer

drive

gearset

102

has

an

input

gear

106

driven

by

cross

steer shaft

97,

an

idler

gear

107,

and

an

output

gear

108

driving

left

input

sun

gear

32'.

Thus,

right

and

left

input

sun

gears

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 33 34

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