AU2020200580B2 - Working vehicle - Google Patents

Abstract

A working vehicle comprises a swivel body attached horizontally turnable to a vehicle body of a travelling vehicle, a boom attached at least to be able to rise and fall to the swivel body, and a working device attached to the boom. The swivel body comprises a turn table supported horizontally turnable on the vehicle body, a pair of right and left side plate members provided standing side by side with a predetermined space apart laterally on the turn table, and a back plate member provided connecting the rears of the pair of right and left side plate members. A proximal end of the boom can be supported turnable via a boom support shaft attached connecting the pair of right and left side plate members. The upper portion of the back plate member is provided close to rear edges of the pair of right and left side plate members. The middle portion of the back plate member is formed to be set further forward than the rear edges of the pair of right and left side plate members in side view. A storage space open at the rear is formed to be surrounded by the back plate member and the pair of right and left side plate members. 21 2020

Description

2020200580 28 Jan 2020

F IG.3 FIG.3

53c 53c 50 50

53a 2020200580

53a 61 61

52c 52c 61 61

52a 52a

52 52 56 56

53b 53b

53 53 50a 50a

55 55

0 00 0 0 0 00 58 57 57 58

52b 52b 51

WORKING VEHICLE TECHNICAL FIELD

[0 0 01 ] T he p re se n t i nv e n t i o n r e l a t e s t o a w o rk i ng ve hi c l e c o n fi g ur e d

t o c o m p ri s e a s w i v e l bo d y on a ve hi c l e b od y o f t he w o rk i n g b od y f or 2020200580

s up p or t i n g a be a m , a n d t o a s wi v e l b od y fo r wo r ki ng ve hi c l e s .

[0 0 02 ] In w o rk i n g v e hi c l e s o r s wi ve l b o d i e s o f t h i s t yp e , t y pi c a l l y t h e

bo om c a n b e ra i s e d , l o w e r e d , a n d s o o n , a n d i s a t t a c he d t o t he s wi ve l b o d y

a n d w he re i n a w o rk i n g d e v i c e i s pr o vi de d o n t he b o om .

[0 0 03 ] T he i nv e n t i o n ha s pa rt i c ul a r , a l t ho u g h no t e xc l u s i v e ,

a p pl i c a t i on t o w o rk i n g ve hi c l e s , s uc h a s a ve hi c l e f or w o r k a t he i gh t o r a

c ra ne ve hi c l e . I t a l s o ha s pa rt i c ul a r , bu t n ot e xc l u s i ve , a p p l i c a t i on t o

s wi ve l b o di e s a t t a c he d t o t u rn t a bl e s m o u nt e d o n o t h e r ki n d s o f s ub s t ra t e

t ha t a r e su bj e c t t o t he sa m e c on st ra i n t s a s wo r ki n g ve hi c l e s of t he t yp e

de sc ri be d he re i n .

[0 0 04 ] T h ro u gh o ut t he sp e c i fi c a t i o n , un l e s s t he c on t e xt re q ui re s

ot he r wi se , t h e w o r d “ c om p ri se ” or va ri a t i o n s su c h a s “ c om p ri se s ” o r

“ c o m p ri s i ng ” , w i l l b e u n de r st o od t o i m pl y t he i n c l u si o n o f a st a t e d i nt e g e r

or g ro u p o f i nt e g e r s b ut no t t he e xc l u si o n o f a n y o t h e r i n t e ge r o r gr o up o f

i nt e g e r s .

TECHNICAL BACKGROUND

[0 0 05 ] T he fo l l o wi n g di s c u s s i o n o f t he ba c k gr o un d a rt i s i nt e n de d t o

fa c i l i t a t e a n u nd e r s t a nd i ng o f t he p re se nt i nv e n t i on o nl y . I t s ho ul d be

a p pr e c i a t e d t ha t t he di s c u s s i o n i s n ot a n a c k no w l e dg e m e n t o r a d m i s si o n

t ha t a n y of t h e m a t e ri a l re fe r r e d t o w a s pa rt o f t he c o m m o n ge ne ra l

kn o wl e d ge a s a t t he p ri o ri t y da t e o f t he a p pl i c a t i o n .

[0 0 06 ] A c o nf i g u ra t i on w h e re i n a s wi ve l bo d y i s pr o vi de d ho ri z o nt a l l y

t u rn a b l e o n a ve hi c l e t ha t c a n t r a ve l , w h e r e i n a b oo m t ha t c a n b e ra i se d ,

l o we re d , a nd s o o n i s pr o vi de d o n t hi s s w i ve l b od y , a nd w he re i n a w or ki n g

de vi c e i s pr o vi de d o n t h i s b oo m , i s ge ne ra l l y k no w n a s a w o rk i n g ve h i c l e

s uc h a s a f o r - w o rk - a t - he i gh t ve h i c l e or a c r a n e ve hi c l e . I n a fo r - w or k -a t - 2020200580

he i g ht ve hi c l e , t he w or ki n g d e v i c e i s c o nf i g u re d wi t h a w or k pl a t fo rm f or

a n o pe ra t o r t o ge t a bo a r d p r ov i d e d a t t he t i p o f t h e bo om , a nd i n a c r a n e

ve hi c l e , t he w or ki n g d e v i c e i s c o nf i g u re d su c h t h a t a h oi st i n g wi r e w i t h a

ho i st i n g h oo k a t t he t i p i s r e e l e d o ut f r om t h e t i p o f t he b oo m a n d wi t h a

m e c ha ni sm t o re e l i n a n d o ut t he wi re p r ov i d e d o n t h e p ro xi m a l e n d s i d e

of t he bo om or i n t he s wi ve l b od y . W i t h a w o rk i ng ve hi c l e h a v i n g s uc h a

c o nf i g u ra t i on , w o rk a t he i g ht o r c ra ne wo r k by t h e w or ki n g de vi c e c a n b e

pe rf o rm e d i n a b ro a d a r e a a r ou n d t he ve hi c l e wi t h u se o f t he t u r n o f t he

s wi ve l bo d y . A s s uc h a f or - w o rk - a t - he i g ht v e h i c l e , t h e r e a re on e s d e s c r i b e d

i n , f or e x a m pl e , Pa t e n t D o c u m e n t s 1 t o 3 .

[0 0 07 ] Pa t e nt D oc um e n t 1: J a p a n e se L a i d - O pe n P a t e nt Pu bl i c a t i o n N o.

20 0 1 - 2 4 04 0 0 ( A )

Pa t e nt D oc um e n t 2: J a p a n e se L a i d - O pe n P a t e nt P u bl i c a t i o n No .

20 0 1 - 6 3 97 3 ( A)

Pa t e nt D oc um e n t 3: J a p a n e se L a i d - O pe n P a t e nt Pu bl i c a t i o n N o.

20 0 0 - 3 0 23 9 0 ( A )

PROBLEMS TO BE SOLVED BY THE INVENTION

[0 0 08 ] In s uc h a wo r ki n g ve hi c l e , h yd ra ul i c va l v e s a n d c o nt r ol de v i c e s

fo r o pe ra t i on c on t r ol of t he b oo m p r o vi de d on t he s wi ve l b o dy a n d t he

w or ki n g d e vi c e a r e c on ne c t e d t o t he bo om a n d t he w o rk i ng de vi c e v i a

hy d ra ul i c pi pe s , c o nt r ol s i g na l t r a n sm i s si o n c a b l e s , a n d t he l i ke a nd t hu s

a re g e n e r a l l y p r ov i d e d on t he s wi ve l b od y . C on ve nt i o na l l y, t he a b o ve -

m e n t i on e d h yd ra ul i c v a l ve s a n d c o n t r ol de vi c e s h a v e be e n a t t a c h e d t o s i d e

pl a t e s o f t he s wi ve l b od y . H o w e ve r , w he n a t t a c he d t o s i de su r fa c e s a s

a b ov e , t h e r e i s t he pr o bl e m t ha t t he se h yd ra ul i c va l ve s a n d c on t r o l de vi c e s

pr ot r ud e ou t wa rd f ro m t he s i d e s ur fa c e s o f t he s wi ve l bo d y , s o t ha t i t i s 2020200580

di ff i c ul t t o e f fe c t i ve l y u s e t he sp a c e a ro u nd t h e s w i v e l b o dy .

SUMMARY OF THE INVENTION

[0 0 09 ] In vi e w of t hi s p r o bl e m , a n o bj e c t o f o ne e m b od i m e n t of t he

pr e se nt i n ve nt i o n i s t o pr o vi de a w or ki n g v e h i c l e w hi c h ha s a s wi ve l bo d y

c o nf i g u re d s uc h t h a t c o m p o ne nt s fo r o pe ra t i ng a b oo m a t t a c h e d t h e s wi ve l

bo d y c a n b e p ro vi de d wi t h o ut p r ot ru di n g o ut w a r d f r om t he s wi ve l b o dy .

[0 0 10 ] In o r de r t o a c hi e v e t he a bo v e o bj e c t , a w o rk i n g ve hi c l e

a c c or di n g t o t hi s e m bo di m e nt o f t he p re s e n t i n ve nt i o n c o m p ri s e s a s wi ve l

bo d y a t t a c he d t o a ve hi c l e bo d y of a t ra ve l l i ng ve hi c l e t o be h or i z o nt a l l y

t u rn a b l e , a b oo m a t t a c h a b l e a t l e a s t t o be a b l e t o ri s e a nd f a l l re l a t i ve t o

t he s w i ve l b o dy ( na m e l y , c a pa b l e o f de rr i c ki n g ( s w i ng i n g u p wa r dl y a n d

do w n wa r dl y ) , a c y l i n de r to r ai s e a n d l o we r t he b o o m be i ng l oc at e d o n

a n u n de r si d e o f t he b o om , t he c yl i n de r ha vi n g a ti p a t a d i s ta l e n d of

t he c y l i n d e r , pi v ot al l y c o u pl e d t o t he b o om , a n d a pr ox i ma l e n d

at t ac h a bl e t o t he s wi ve l bo d y , a n d a w or k i n g d e v i c e a t t a c h a bl e t o t h e

bo om . T h e s wi ve l b o dy c o m p r i se s a t ur n t a b l e t o be h or i z o nt a l l y t u rn a b l e

on t he ve hi c l e b od y; a pa i r o f r i gh t a n d l e ft s i de pl a t e m e m be r s pr o vi de d

st a n di n g si de b y si de wi t h a pr e d e t e r m i ne d l a t e ra l s pa c i n g o n t he t u rn t a b l e ;

a n d a ba c k pl a t e m e m be r p r ov i d e d c on ne c t i n g t he re a r po rt i on s o f t he pa i r

of r i g h t a n d l e f t si de p l a t e m e m be r s, t h e b ac k pl at e me m be r h av i n g a n

u p p e r p or ti o n , a mi d d l e po r t i o n a n d a l o we r p or ti o n ; a n d a pr o xi m a l e nd

of t he bo om be i n g a b l e t o be t u r na bl y s u pp o rt e d v i a a b o om su p p or t s ha ft

a t t a c h a b l y c o nn e c t a b l e t o t he pa i r o f ri g ht a nd l e f t si de pl a t e m e m b e r s . T h e

up pe r po rt i o n of t h e b a c k p l a t e m e m b e r i s p r ov i d e d t o be c l o se t o r e a r e d ge s

of t he p a i r o f ri g ht a n d l e ft si de pl a t e m e m b e r s , a nd t he m i d dl e p or t i on of

t he ba c k pl a t e m e m b e r i s f or m e d t o be se t f ur t he r f or w a r d t ha n t he re a r 2020200580

e d ge s o f t he pa i r o f r i g h t a n d l e ft si de pl a t e m e m b e r s i n si de vi e w , a nd

f ur t he r f or w a r d t ha n t h e u p p e r po r t i o n of t h e b ac k p l at e . A s t o ra ge

s pa c e o pe n a t t he r e a r i s fo rm e d t o be s ur r ou n de d b y t h e ba c k pl a t e m e m b e r

a n d t he pa i r of ri g ht a n d l e ft s i d e pl a t e m e m be r s. T he l o w e r p or ti o n of t he

b ac k p l a te m e m b e r i nc l u d e s a b o x p or ti o n e x te n di n g l a te r a l l y a n d

r e c ta n g u l a r i n c r o s s - s e c ti o n t o s u p p o r t t he r ai s i ng a n d l o we r i ng

c yl i n de r , w h e r e b y t he p r ox i m al e n d o f t he r a i si n g a n d l o we r i n g c yl i n de r

i s a bl e t o b e s u p p o r t e d b y t h e l o we r p or ti o n o f t h e b a c k p l a te .

[0 0 11 ] In t h i s e m b od i m e nt o f t h e wo r k i n g v e h i c l e h a v i n g t he a b ov e

c o nf i g u ra t i on , t h e b oo m s u pp o r t s ha ft i s p re fe ra bl y l o c a t a b l e i n u pp e r

e d ge s o f t he pa i r o f ri gh t a n d l e f t si de pl a t e m e m be r s a n d a b o ve t he u pp e r

po rt i o n of t he ba c k p l a t e m e m b e r .

[0 0 12 ] In on e a sp e c t of t h i s e m bo di m e nt of t he w or ki n g v e h i c l e ha vi n g

t he a b o ve c o nf i g u ra t i o n , t he up pe r a nd l o w e r po rt i on s of t h e b a c k pl a t e

m e m be r a re pr e f e r a b l y i n t h e s ha pe o f a bo x e xt e n di ng l a t e r a l l y a n d

re c t a ng ul a r i n c r o s s - s e c t i o n .

[0 0 13 ] In a n o t h e r a sp e c t o f t h i s e m b od i m e nt o f t he w o rk i n g ve hi c l e

ha vi ng t he a b ov e c o nf i g u ra t i on , t he s wi ve l b o d y i n c l u d e s a p ai r of

p ar al l e l s p ac e d r a i si n g a n d l o we r i n g c yl i n d e r s u p p or t m e m b e r s t h a t

s ur m o u n t t he bo x po r t i o n of t h e l o we r p or ti o n o f t he b ac k pl at e me m be r

fo r fi r m l y a n d s ta b l y c o n ne c t i n g t he pr ox i ma l e n d of t h e r a i si n g a n d

l o we r i n g c yl i n de r t h e r e t o, w h e r e i n u p p e r e n d s of t h e r ai s i n g a n d

l o we r i n g c yl i n d e r s u p p or t me m be r s a r e fi xe dl y at t ac he d t o t h e l o w e r

e n d of t h e mi d d l e p or ti o n o f t he b ac k pl a te me m b e r a n d o p p o si n g l o w e r

e n d s of t he r ai s i ng a n d l o w e r i n g c y l i n d e r s u p p o r t me m be r s ar e fi xe dl y

at t ac he d t o t he t ur n ta b l e , s tr a d dl i n g t he b o x p or ti o n ,

[0 0 14 ] In a f ur t h e r a sp e c t of t h i s e m b od i m e n t , t h e w o r ki ng bo d y f u rt he r 2020200580

c om p ri se s a ra i si n g a n d l o we ri n g c y l i nd e r t o ra i s e a n d l o we r t h e bo om i s

pr e f e r a b l y p ro vi de d t o b e l o c a t e d o n t he u n de r si de of t he b oo m , a nd t h e

t i p of t he r a i s i n g a nd l o we ri n g c yl i n de r i s pi v ot a l l y c o u pl e d t o t he l o we r

s ur fa c e o f t h e bo om , a n d a p r ox i m a l e n d o f t he r a i s i n g a n d l o we ri n g

c yl i n de r i s s up p or t e d b y t he l o we r p or t i o n o f t h e ba c k pl a t e m e m b e r .

[0 0 15 ] P re fe ra bl y, t h e u p p e r p or ti o n o f t he b ac k pl at e me m be r

includes an upper b ox po r ti o n e x te n d i n g l a te r a l l y and be i n g

r e c ta n g u l a r i n c r o s s - s e c ti o n f or pi vo t al l y s u p p or ti n g t h e p r ox i ma l e n d

of t he l o we r l e ve l i ng c yl i n de r .

[0 0 16 ] In a n o t h e r a sp e c t o f t hi s e m b od i m e nt o f t he w o rk i n g ve hi c l e

ha vi ng t he a b ov e c o nf i g u ra t i o n , t he s w i v e l b o d y i nc l u de s a n u p pe r p ai r

of p ar al l e l s p ac e d l o w e r l e v e l i n g c yl i n d e r s u p p or t me m b e r s t h a t

s ur m o u n t t h e u p p e r b ox p o r t i o n o f t h e u p p e r p or ti o n of t h e b a c k pl at e

me m be r f or f i r ml y a n d s t a bl y c o n ne c t i ng t h e pr o xi ma l e n d o f t he l o we r

l e v e l i n g c yl i n d e r t h e r e t o, w he r e i n u p pe r e n d s o f t h e l o w e r l e v e l i n g

c yl i n de r s u p p or t me m be r s ar e f i xe d l y at t ac he d t o w ar d s t h e r e a r o f t he

u p p e r b ox p or ti o n a n d o p p o s i n g l o we r e n d s o f t h e l o we r l e v e l i n g

c yl i n de r s u p p or t m e m b e r s ar e fi xe dl y a tt ac h e d to t h e f r o n t o f t h e u p p e r

p or ti o n o f t h e b ac k p l a te me m b e r , s tr a d dl i ng t he u p pe r b o x p o r ti o n .

[0 0 17 ] In a f ur t h e r a s pe c t o f t hi s e m b o di m e n t of t he wo r ki ng v e h i c l e

ha vi ng t he a b ov e c on fi g u ra t i o n , t he w o r ki ng de vi c e pr e f e r a b l y c om pr i se s

a w o rk p l a t f or m a t t a c h e d ve rt i c a l l y s w i ng a b l e t o t h e t i p o f t he b oo m , a n

up pe r l e v e l i n g c yl i n de r pr o vi de d be t w e e n t he w o rk pl a t fo rm a n d t he bo om

t o m a k e t he w o rk pl a t fo rm ve rt i c a l l y s wi n g a c c o r di ng t o t h e r i se a n d f a l l

of t he bo om , a n d a l o w e r l e v e l i ng c yl i n de r p r o vi de d be t we e n t h e s wi ve l

bo d y a nd t he b oo m a n d i s c o n fi gu re d s uc h t h a t , r e c e i v i n g s u pp l y o f

op e r a t i n g oi l fr om t he l o w e r l e ve l i n g c y l i n de r e xt e n de d a n d c o nt ra c t e d 2020200580

a c c or di n g t o t he ri s e a n d fa l l o f t he b o om , t h e up pe r l e ve l i ng c yl i n de r

e xt e n d s a nd c o nt ra c t s t o ho l d t he w or k p l a t f or m h o r i z on t a l , a nd a p ro xi m a l

e n d o f t he l o we r l e ve l i ng c y l i n de r i s s u pp o rt e d by t h e u p pe r po rt i o n o f t he

ba c k p l a t e m e m b e r .

[0 0 18 ] In a no t h e r e m b od i m e n t of t he p re se nt i nv e n t i o n, t he re i s

pr o vi de d a s wi ve l bo d y f o r a t t a c h i n g t o a ve hi c l e bo d y o f a wo r ki n g ve hi c l e

or ot he r b o dy , t he bo d y c o m pr i s i n g: (i ) a b oo m a t t a c h a bl e t o t h e s wi v e l

bo d y t o b e a b l e t o r i se a nd f a l l r e l a ti ve to t h e s w i v e l b o d y , (i i ) a ra i si n g

a n d l o we ri n g c yl i n de r t o ra i se a nd l o we r t he b oo m b e i n g l oc a t e d on a n

un de r si de o f t h e b oo m , t he ra i s i n g a n d l o w e ri ng c yl i n de r ha v i n g a pr o xi m a l

e n d a t t a c ha bl e t o t h e s wi ve l b od y, a n d ( i v ) a w or k i n g d e v i c e a t t a c h e d t o

t he bo o m ; t he s wi ve l b od y i nc l u d i n g:

a t ur n t a bl e f o r be i n g s u pp o rt e d t o be h o ri z o nt a l l y t u r na bl e o n

t he ve hi c l e bo d y;

a p a i r o f ri gh t a n d l e ft si de pl a t e m e m be r s s t a nd i n g si de b y s i d e

on t he t u r n t a bl e wi t h a pr e d e t e rm i ne d l a t e ra l s pa c i ng fo r t ur na bl y

s up p or t i n g a p r o xi m a l e n d o f t h e bo om vi a a b o om s u pp o rt sh a f t a t t a c ha bl y

c o nn e c t a b l e t o t he si de p l a t e m e m be r s;

a b a c k pl a t e m e m b e r c on ne c t i n g r e a r p o rt i o n s o f t he p a i r o f ri gh t

a n d l e ft s i d e p l a t e m e m be r s, t he ba c k pl a t e m e m be r h a v i n g a n up pe r

po rt i o n , a m i d dl e po rt i on a n d a l o we r p or t i o n;

t he up pe r p o rt i o n o f t he b a c k pl a t e m e m b e r be i n g p r ov i d e d t o

be c l o se t o re a r e d ge s o f t h e pa i r o f ri gh t a n d l e ft s i d e pl a t e m e m b e r s; a nd

t he m i d dl e po rt i o n o f t h e ba c k p l a t e m e m be r b e i ng f o rm e d t o be

se t fu rt he r f o r wa rd t ha n t he r e a r e d ge s o f t he pa i r o f ri g ht a n d l e ft si de

pl a t e m e m b e r s i n si de vi e w , a nd fu rt he r f o r wa rd t h a n t he up pe r p or t i on of 2020200580

t he ba c k p l a t e ;

w he re i n:

(1 ) t he ba c k pl a t e m e m be r a n d t he p a i r o f r i g ht a n d l e f t si de pl a t e

m e m be r s f o rm a s t o ra ge s pa c e op e n a t t he re a r o f t he s wi ve l

bo d y;

(2 ) t he l o w e r po rt i on of t h e ba c k pl a t e m e m b e r i nc l u de s a l a t e r a l l y

e xt e n di n g bo x po rt i o n re c t a n gu l a r i n c r o s s - s e c t i o n fo r pi v ot a l l y

s up p or t i n g t h e p r ox i m a l e nd of t h e ra i si n g a n d l o we ri n g

c yl i n de r .

[0 0 19 ] Ac c o r di ng t o o ne a sp e c t o f t he ot he r e m b od i m e n t o f t he p re se nt

i n ve nt i o n , t h e b oo m s u p p or t s h a ft i s l oc a ta b l e i n u p pe r e d ge s o f t he p ai r

of r i g ht a n d l e ft s i de pl a te me m be r s a n d a b o ve t he u p pe r p or ti o n of t he

b ac k pl a te m e m b e r .

[0 0 20 ] Ac c o r di ng t o a n ot he r a s pe c t o f t h i s ot he r e m b o di m e n t , t he

s wi ve l b o dy i nc l u de s a p ai r o f pa r a l l e l s p a c e d r ai si n g a n d l o we r i ng

c yl i n de r s u p p o r t me m be r s t h a t s ur m o u n t t h e bo x p or ti o n o f t he l o w e r

p or ti o n of t he b ac k p l at e m e m b e r f or fi r m l y a n d s t a bl y c o n ne c ti n g t h e

pr o xi m al e n d of t h e r ai s i n g a n d l o we r i ng c yl i n d e r t h e r e t o, w he r e i n

u p p e r e n d s o f t h e r ai si n g a n d l o we r i ng c y l i n d e r s u p p or t m e m be r s a r e

fi xe dl y at t ac he d to t he l o we r e n d o f t h e m i d dl e p or ti o n o f t h e b a c k pl a te

me m be r a n d o p p o si n g l o we r e n d s of t he r a i si n g a n d l o we r i ng c yl i n de r

s u p p or t me m be r s ar e fi xe d l y a t ta c he d t o t he t ur n t a bl e , s tr a d d l i ng t he

b ox p or ti o n ,

[0 0 21 ] Ac c o r di ng t o a f u rt he r a s pe c t o f t hi s ot he r e m b od i m e nt , t he

w or ki n g v e h i c l e f ur t h e r c om p r i s e s a l o w e r l e ve l i n g c yl i n de r b e i n g

e x te n d a bl e a n d r e t r a c t a bl e t o ma i nt ai n t h e w or k i ng de vi c e i n a 2020200580

h or i z o n t al po s i ti o n , t he l o we r l e ve l i n g c yl i n de r ha vi n g a pr o xi m a l e n d fo r

pi vo t a l c o u pl i n g t o t h e s w i v e l b o dy ;

w he re i n t h e pr o xi m a l e nd o f t h e l o we r l e v e l i n g c y l i nd e r i s a b l e

t o b e s u p po rt e d by t he u pp e r po rt i o n o f t he b a c k pl a t e m e m be r;

a n d wh e r e i n t he up pe r po rt i on of t h e b a c k p l a t e m e m b e r

i nc l u de s a n u pp e r b o x po rt i o n e x t e n di n g l a t e r a l l y a n d be i n g re c t a ng ul a r i n

c r o s s- s e c t i on fo r p i v ot a l l y su p po rt i n g t he p r ox i m a l e n d o f t he l o we r

l e v e l i n g c yl i n de r.

[0 0 22 ] Ac c o r di ng t o a n ot he r a sp e c t o f t h e o t h e r e m b o di m e n t , t h e

s wi ve l b o d y i nc l u de s a n u p pe r p ai r o f pa r al l e l s p ac e d l o w e r l e ve l i n g

c yl i n de r s u p p o r t me m be r s t h a t s ur m o u n t t h e u p pe r b o x p or ti o n of t he

u p p e r p or ti o n o f t he b ac k pl a te me m be r f or fi r m l y a n d s ta b l y

c o n ne c t i n g t he p r o xi m al e n d o f t he l o w e r l e ve l i n g c yl i n de r t he r e to ,

w he r e i n u p p e r e n d s o f t h e l o w e r l e ve l i n g c y l i n d e r s u p p or t me m be r s ar e

fi xe dl y a t t ac he d to w ar d s t he r e a r of t he u p pe r b ox p or ti o n a n d o p p o si n g

l o we r e n d s o f t h e l o we r l e ve l i n g c yl i n d e r s u p p o r t me m be r s ar e fi xe d l y

at t ac he d to t he f r o n t of t he u p pe r p or ti o n of t h e ba c k p l a te me m be r ,

s tr a d dl i ng t he u p pe r b o x p o r t i o n .

ADVANTAGEOUS EFFECTS OF THE INVENTION

[0 0 23 ] Ac c o r di ng t o a f u rt he r e m bo di m e nt o f t he p re s e nt i n ve nt i o n , t he

m i d dl e p o rt i o n o f t he b a c k pl a t e m e m be r f o rm i n g pa rt of t h e s w i v e l b od y

i s fo rm e d t o be se t fu rt he r f or w a rd t ha n t h e re a r e dg e s o f t he pa i r o f ri g ht

a n d l e ft si de pl a t e m e m b e r s i n si de v i e w , a n d a st o ra ge sp a c e op e n a t t he

re a r i s fo rm e d t o be sa n d wi c he d b e t w e e n t h e b a c k pl a t e m e m be r a n d t h e

pa i r o f r i g ht a n d l e ft si de pl a t e m e m b e r s , so t h a t h y dr a u l i c va l ve s a nd

c o nt ro l d e v i c e s c a n be pl a c e d i n t hi s st o ra ge s pa c e . He nc e , t h e h yd ra ul i c 2020200580

va l ve s a nd c on t r ol d e v i c e s c a n be p ro vi de d w i t ho ut p r ot ru d i n g ou t wa rd

fr om t he s wi ve l b o dy , s o t ha t , w i t h t he s p a c e oc c u pi e d b y t he s w i ve l b o dy

be i n g s m a l l e r , t h e s pa c e a ro u n d t he s wi ve l b od y c a n b e e f fe c t i ve l y u se d .

[0 0 24 ] In a n a s pe c t o f t h i s f u rt he r e m bo d i m e nt o f t he p re s e nt i nv e n t i on

ha vi ng t he a b o ve c o nf i gu ra t i on , t he b o om s up p o rt s ha ft i s pr e fe ra bl y

pr o vi de d i n u pp e r e d ge s of t he pa i r o f r i gh t a n d l e ft s i d e pl a t e m e m be r s

a n d c o nf i gu re d t o b e l o c a t e d a b ov e t he up pe r p or t i o n of t he b a c k pl a t e

m e m be r, s o t ha t t h e s t or a g e s pa c e c a n be pr o vi de d wi t h o ut b e i ng a f fe c t e d

by a bo o m s u pp o rt st r uc t u re i n t h e s wi ve l b o dy .

[0 0 25 ] In a no t h e r a s pe c t o f t h i s fu rt he r e m b o di m e n t of t he pr e se nt

i n ve nt i o n ha vi ng t he a b o ve c o nf i gu ra t i on , t h e up pe r a n d l o we r p o rt i o n s of

t he b a c k pl a t e m e m b e r p re fe ra bl y ha ve b ox p o rt i o n s e x t e nd i ng l a t e r a l l y a n d

re c t a ng ul a r i n c r o s s - s e c t i o n . B y t hi s m e a n s , t h e u pp e r a n d l o w e r po rt i o n s

of t he ba c k pl a t e m e m be r c a n be st re ng t h e n e d , so t ha t re i n f or c e m e n t c a n

be m a de a ga i n s t a re d uc t i o n i n t he st re ng t h of t he s wi ve l b od y d ue t o

fo rm i n g t he m i d dl e p or t i o n o f t h e ba c k p l a t e m e m b e r t o b e s e t f o r wa r d .

[0 0 26 ] In a f u rt he r a s pe c t of t h i s f u rt h e r e m b o di m e nt of t h e p re s e n t

i n ve nt i o n ha vi ng t he a b o ve c o nf i gu ra t i on , a r a i s i n g a n d l o we ri n g c yl i n de r

t o ra i s e a nd l o w e r t he bo om i s pr e f e r a b l y p ro v i d e d t o be l o c a t e d o n t he

un de r si de o f t he b o om a nd c o nf i gu re d su c h t ha t t h e t i p o f t h e ra i si n g a n d

l o we ri n g c yl i n de r i s p i v ot a l l y c o u pl e d t o t h e l o we r s ur fa c e of t h e b oo m a n d

t ha t a p r ox i m a l e n d o f t h e ra i s i n g a n d l o we ri n g c yl i n de r i s s up p or t e d by

t he l o w e r p o rt i o n o f t he ba c k pl a t e m e m be r. B y t hi s m e a n s , t he st o ra ge

s pa c e c a n be p ro vi de d wi t h o ut b e i n g a ff e c t e d b y a ra i si ng a n d l o we ri ng

c yl i n de r s u p po rt st ru c t ur e i n t he s wi ve l bo d y . F ur t h e r , b y f or m i ng t he l o w e r

po rt i o n o f t he ba c k pl a t e m e m b e r w i t h a bo x p o rt i o n e xt e nd i n g l a t e ra l l y

a n d r e c t a n g ul a r i n c ro s s - s e c t i o n a s s t a t e d a b o ve , t h e r a i si n g a nd l o we ri ng 2020200580

c yl i n de r s up p or t s t r uc t ur e c a n be st re ng t he ne d .

[0 0 27 ] In a no t h e r a s pe c t o f t h i s fu rt he r e m b o di m e n t of t he pr e se nt

i n ve nt i o n ha vi ng t he a b ov e c o nf i g ur a t i o n , t he w o rk i n g de vi c e pr e fe ra bl y

c om p ri se s a w o rk pl a t fo r m a t t a c he d ve rt i c a l l y s w i ng a b l e t o t h e t i p o f t he

bo om , a n up pe r l e ve l i ng c yl i n d e r , a n d a l o we r l e ve l i ng c yl i n d e r a n d i s

c o nf i g u re d s uc h t ha t t he w or k p l a t f or m i s he l d ho ri z o nt a l b y t he u pp e r a n d

l o we r l e ve l i n g c y l i nd e r s i n r e sp on s e t o t he r i se a n d fa l l of t he b oo m a n d

t ha t a p r ox i m a l e n d o f t he l o we r l e ve l i ng c y l i nd e r i s s up p o rt e d b y t he u p pe r

po rt i o n of t h e ba c k pl a t e m e m be r . B y t hi s m e a n s, t h e s t o ra g e s pa c e c a n be

pr o vi de d w i t h ou t be i n g a ff e c t e d b y a l o w e r l e v e l i n g c y l i n de r su p po rt

st r uc t u re . Fu rt he r , b y f o rm i n g t h e up pe r po rt i o n o f t he ba c k p l a t e m e m b e r

wi t h a b ox po rt i o n e x t e nd i n g l a t e ra l l y a n d re c t a ng u l a r i n c r o s s - s e c t i o n a s

st a t e d a b ov e , t h e l o we r l e ve l i ng c y l i nd e r s u p po rt s t r uc t u re c a n be

st re n gt he ne d .

[0 0 28 ] F ur t h e r sc o pe o f a p pl i c a bi l i t y of t he p re s e n t i n ve nt i o n wi l l

be c om e a pp a r e n t f ro m t he d e t a i l e d de s c ri pt i o n g i v e n he re i na ft e r . H o we ve r,

i t s h ou l d be u nd e r s t oo d t h a t t he d e t a i l e d de s c r i p t i on a n d s pe c i fi c e xa m pl e s,

w hi l e i nd i c a t i ng p re fe rr e d e m bo d i m e nt s of t h e i n ve n t i on , a re gi ve n b y wa y

of i l l u st ra t i o n o nl y , s i nc e va ri o u s c ha ng e s a nd m o di fi c a t i o n s w i t h i n t h e

s pi ri t a nd s c op e o f t h e i n ve nt i o n w i l l be c o m e a p pa re nt t o t ho s e s ki l l e d i n

t he a rt fr o m t h i s de t a i l e d d e sc ri p t i o n .

BRIEF DESCRIPTIONS OF THE DRAWINGS

[0 0 29 ] T he p re s e n t i n ve nt i o n w i l l b e c o m e m o re f ul l y u n de r st oo d f ro m

t he de t a i l e d de s c r i p t i on gi ve n he r e i n be l o w a n d t h e a c c om pa n yi ng dr a wi ng s

w hi c h a r e g i v e n b y wa y of i l l u s t ra t i o n o nl y a nd t hu s a r e no t l i m i t a t i ve o f

t he pr e se nt i n ve nt i o n. 2020200580

[0 0 30 ] F I G. 1 i s a pe r s pe c t i ve v i e w s ho w i ng a f o r - w o r k - a t - h e i gh t

ve hi c l e a c c o r di n g t o a n e m b od i m e nt of t h e p re se nt i n ve nt i o n .

F I G. 2 i s a pe r s pe c t i ve vi e w of t he f or - w or k - a t - he i g ht v e h i c l e ,

se e n fr om be hi n d.

F I G. 3 i s a pe r sp e c t i v e vi e w o f a s wi ve l b o dy u s e d i n t he f o r -

w or k - a t - he i g ht ve hi c l e , s e e n f r o m be hi n d .

F I G. 4 i s a c ro s s - se c t i o na l vi e w of t he s w i v e l b o dy .

F I G. 5 i s a pe r s pe c t i ve vi e w o f t h e s w i ve l b od y , se e n f ro m f r on t .

F I G. 6 i s a p l a n vi e w o f t he s wi v e l b od y .

F I G. 7 i s a pe r sp e c t i v e vi e w o f t he s wi ve l b od y wi t h c on t r ol

de vi c e s m ou nt e d t he re i n .

DESCRIPTION OF THE EMBODIMENTS

[0 0 31 ] A pr e f e r re d e m bo di m e nt o f t h e p re se n t i nv e n t i on w i l l b e

de sc ri be d b e l o w wi t h re fe re nc e t o t he dr a wi ng s . FI G . 1 sh o w s a f or - w or k -

a t - he i g ht ve hi c l e 1 a s a n e x a m pl e wo r ki n g ve hi c l e a c c or di n g t o t h e p re s e n t

i n ve nt i o n . F I G. 2 sh o w s t he f or - wo r k - a t - h e i g ht ve hi c l e 1 i n a w or ki n g

st a t e , s e e n fr om b e h i n d . T hi s f o r - w o rk - a t - he i gh t ve hi c l e 1 i s c o nf i g u re d

wi t h a t r uc k ve hi c l e a s t he ba se , w hi c h ha s a n o pe ra t i on c a bi n 5 i n t he f r on t

of a ve hi c l e b od y 3, r i g ht a n d l e f t f r on t wh e e l s 1 3 , a nd r i g ht a nd l e ft re a r

w he e l s 1 5 . O u t r i g ge r j a c k s 9 t o l i f t a n d s up p or t t he f o r - wo r k - a t - he i g ht

ve hi c l e 1 a t t he t i m e o f w o rk i n g or s o on a re p r ov i d e d a t t he f r on t a n d r e a r

of t he ve hi c l e b o dy 3. T he c o nf i g ur a t i o n o f t h e o ut ri g ge r j a c k 9 wi l l be

de sc ri be d t a k i n g t he ou t r i g ge r j a c k 9 o n t h e r e a r s i d e a s a n e x a m pl e . T he

ou t r i g ge r j a c k 9 i s c o nf i g u re d t o c om p ri se a n ou t r i g ge r b ox 9 a a t t a c h e d t o

t he ve hi c l e b od y 3 , ri g ht a n d l e f t ou t r i g ge r be a m s 9 b s u pp o rt e d e x t e n s i b l e

a n d re t r a c t a b l e si de wa y b y t he o ut ri gg e r bo x 9 a , a n d ri g ht a n d l e ft j a c k s 2020200580

11 a t t a c he d a t t he t i p s o f t he ri g ht a n d l e f t ou t r i g ge r be a m s 9 b. N ot e t ha t

t he o u t r i g ge r j a c k 9 o n t h e f ro nt si de a l so h a s t h e sa m e c o n fi g ur a t i o n. T he

ou t r i g ge r be a m s 9b c a n b e e xt e n de d a n d r e t ra c t e d si de wa y by a n

i nc o rp o ra t e d e x t e nd i n g hy d ra ul i c c yl i n de r , a nd t he j a c k 1 1 ha s a s up p or t

11 a w hi c h i s d o wn w a r d e x t e n si bl e a nd r e t ra c t a bl e by a n i nc o rp o ra t e d j a c k

c yl i n de r . T h u s , a t t he t i m e of w or ki n g , a s s h o wn i n F I G. 2 , t h e ou t r i g ge r

be a m s 9b a re e x t e nd e d r i g ht a nd l e f t , a nd t he s u pp o rt s 1 1a o f t he j a c k s 11

a re e xt e n de d d o w n wa r d , s o t h a t t h e f o r - w o r k - a t - h e i gh t ve hi c l e 1 c a n be

l i f t e d a n d s up p or t e d.

[0 0 32 ] A j a c k o pe ra t i on c on t r ol d e v i c e 5 fo r m a ki ng t he o ut ri g ge r j a c k s

9 o pe ra t e i s p ro vi de d o n t h e re a r e n d o f t he ve hi c l e bo d y 3 . I n t he j a c k

op e r a t i o n c o nt r ol d e v i c e 5 , v a r i o u s s w i t c he s a n d op e r a t i n g l e ve r s a r e

pr o vi de d , a n d a n o pe ra t or c a n o p e ra t e t he s e s w i t c h e s a n d op e r a t i n g l e ve r s

t o e x t e nd a nd re t r a c t t he o ut ri g ge r be a m s 9 b s i d e wa y a n d t o e x t e n d a n d

re t ra c t t he s up p or t s 1 1a o f t he j a c k s 1 1 ve rt i c a l l y .

[0 0 33 ] A s wi ve l bo d y 5 0 p r ot ru di n g u p wa rd a n d c o n fi gu re d t o be

ho ri z o nt a l l y t u r na bl e i s p r ov i d e d on t h e r e a r m i d dl e o f t he ve hi c l e bo d y 3 .

T he s w i ve l b od y 50 i s c o nf i g u re d t o be t u rn e d h or i z o nt a l l y o n t h e ve hi c l e

bo d y 3 b y a t ur n m o t o r ( n ot s h o w n) , t h e s t r uc t u re o f t h e s wi ve l b o dy b e i ng

de sc ri be d i n de t a i l l a t e r . A bo o m 19 i s a t t a c he d t o t he t o p o f t he s wi ve l

bo d y 5 0 wi t h be i n g p i v ot a l l y c o up l e d a nd s up p o rt e d v i a a bo om s up p or t

s ha ft 1 9a s uc h t h a t t he b o om c a n be r a i s e d a n d l o we re d . T h e b o om 1 9 i s

c om p o se d of a p l u ra l i t y o f b o om m e m be r s of a n e st i n g st r uc t u re s uc h t ha t

t he b oo m c a n e x t e nd a n d c on t r a c t a n d i s e xt e n de d a n d c o nt ra c t e d b y a n

i nc o rp o ra t e d e x t e nd i n g a n d c on t r a c t i n g c yl i n de r 2 1 . I n o r de r t o m a k e t h e

bo om 1 9 r i s e a nd fa l l , a r a i si n g a nd l o w e r i n g c yl i n de r 2 3 i s p ro vi d e d a c r o s s

be t w e e n t he s w i v e l bo d y 50 a n d t he l o we r s u rf a c e o f t he bo om 1 9 . T he t i p 2020200580

of t h e r a i si n g a nd l o w e r i ng c y l i nd e r 2 3 i s pi vo t a l l y c ou pl e d t o a b ra c ke t

19 b p ro vi de d o n t h e l o we r s u rf a c e of t he b oo m 19 , a n d t h e pr o x i m a l e nd

t he re o f i s pi v ot a l l y c o up l e d t o t h e s w i ve l b od y 50 , t h e p i v o t a l l y c ou pl i n g

st r uc t u re of t he pr o xi m a l e n d be i ng de sc ri b e d l a t e r .

[0 0 34 ] A v e r t i c a l po s t 2 9 i s a t t a c h e d s wi n ga bl e i n a ve rt i c a l pl a n e t o

t he t i p o f t h e b o om 19 . T he ve rt i c a l p o st 2 9 i s c o n fi gu re d t o be he l d ve rt i c a l

by a n u pp e r l e v e l i n g c y l i nd e r 25 a t t a c h e d t o t h e t i p of t he bo om 19

re ga rd l e s s of t h e b o om 1 9 ri si n g or fa l l i n g . A w o rk pl a t fo rm 27 i s a t t a c h e d

s wi n ga b l e (h o ri z o nt a l l y t ur na bl e wi t h t he ve rt i c a l po s t 2 9 a s t h e c e nt e r ) t o

t hi s ve rt i c a l p o st 2 9. A n o pe ra t i n g d e v i c e 2 8 i s p r ov i d e d o n t he w or k

pl a t f o rm 2 7, a n d a n o pe ra t o r a bo a r d t h e wo r k pl a t f o rm 2 7 c a n op e r a t e

s wi t c he s , a n o pe ra t i n g l e ve r L , a nd t he l i k e o f t h e o pe ra t i n g d e vi c e 2 8 t o

ra i s e a nd l o we r , a nd t o e xt e n d a nd c o nt ra c t , t he b o om 19 a n d t o m a k e t he

s wi ve l b o d y 5 0 t u rn s o a s t o m a k e t h e wo r k p l a t f o rm 27 m o ve t o a de si re d

w or k po s i t i o n t o pe r fo rm w o rk a t h e i g ht . F I G . 1 s h o w s t h e st a t e w he re t he

bo om 1 9 a n d t he wo r k p l a t f or m 2 7 a re pu t i n a s t o ra ge po s i t i o n o n t he

ve hi c l e b od y 3 a n d w he re t he b oo m 1 9 i s c o nt ra c t e d po i n t i n g fo r w a r d fr om

t he s w i v e l b o dy 50 , r e st i n g o n a bo om re s t 3a .

[0 0 35 ] Fi r s t a n d se c o nd t o ol b o xe s 3 1 a nd 33 a re pr o vi de d e xt e n di ng

fr om f ro nt t o re a r o n t h e l e ft s i d e o n t he v e h i c l e b o d y 3 , a nd a t hi rd t o ol

bo x 35 i s p r ov i d e d o n t h e f i r s t t oo l b o x 3 1 . Fu rt he r , a f o ur t h t o o l b ox 3 7

i s p ro v i d e d o n t he ri g ht si de o n t he ve hi c l e b od y 3. T h e u p pe r s ur fa c e 3 3a

of t he se c o n d t oo l b ox 33 a n d t h e up pe r su r fa c e 3 5a of t he t hi r d t o ol b o x

35 f ul fi l l t h e r ol e o f st e p s ur fa c e s vi a w hi c h a op e r a t or i s t o ge t a bo a r d t he

w or k p l a t f or m 27 i n t h e st o ra g e p o s i t i o n . A b oa rd i n g s t e p pl a t e 45 i s

pr o vi de d t o b e su p p or t e d b y a s u p po rt m e m be r 44 a n d si t ua t e d o ve r a d ri ve r

c a b i n 5 o n t he fr o nt si de of t he fi r st a n d t hi rd t o ol bo xe s 3 1, 3 5 . Me a n w hi l e , 2020200580

a s s h o wn i n d e t a i l i n F I G. 2, a f oo t re s t b a r 41 i s p ro vi de d t o b e a t t a c h e d

t o t h e l o we r s u r fa c e o f t he re a r - si de o ut r i g ge r b ox 9 a a t t he r e a r of t he

ve hi c l e bo d y 3 , a nd t h e u pp e r s u rf a c e o f t he o ut ri gg e r bo x 9a si t u a t e d a bo ve

t he fo ot re s t ba r 4 1 f o rm s a fi r st st e p s u rf a c e 9c .

[0 0 36 ] Fi r s t a n d s e c o nd st e p st a g e s 4 2, 4 3 a re p r ov i d e d on t he fr o nt

si de o f t h e fi r st s t e p s u rf a c e 9c , a n d t h e u p pe r s u rf a c e s t h e r e o f f u l fi l l t he

ro l e of a se c o n d st e p s u rf a c e 4 2 a a n d t h i r d st e p s u r fa c e 4 3a . T h e a b o ve -

m e n t i on e d f i r s t t o t hi rd t oo l bo xe s 3 1, 3 3 , 35 a re p ro vi de d i n f r on t of t he se

fi r st a n d s e c o nd st e p s t a ge s 42 , 4 3, a n d t he up pe r s ur fa c e 3 3a o f t h e se c on d

t o ol b ox 3 3 a n d t h e u p pe r s ur fa c e 3 5a o f t he t hi rd t oo l bo x 3 5 fo rm s t e p

s ur fa c e s f ol l o w i ng t he se c o n d s t e p s u rf a c e 42 a a n d t hi rd st e p s ur f a c e 4 3a .

He nc e , t he up pe r s ur fa c e 3 3a of t he se c o n d t oo l b ox 33 i s c a l l e d a fo u rt h

st e p s u r fa c e 3 3a , a n d t he up pe r s u rf a c e 3 5a of t h e t hi r d t oo l b o x 3 5 i s c a l l e d

a fi ft h s t e p su r fa c e 3 5a . T h u s, a op e r a t or c a n c l i m b up f ro m t he f oo t r e st

ba r 4 1 t o t h e f i r s t s t e p su r fa c e 9c , t he n w a l k u p t he se c o nd s t e p s u r fa c e

42 a , t h i r d st e p s u rf a c e 4 3a , f o ur t h st e p s ur fa c e 33 a , a n d fi ft h st e p s ur fa c e

35 a o nt o t h e bo a r di n g s t e p pl a t e 45 , a nd g e t a bo a r d t he w o rk pl a t fo rm 27

fr om t he b oa rd i n g st e p p l a t e 4 5 .

[0 0 37 ] In t he fo r - wo r k - a t - he i g ht ve hi c l e 1 c o n fi gu re d a s a bo ve , t h e

s wi ve l bo d y 5 0 i s s u r ro u nd e d b y t he s e c o nd t o ol b o x 3 3 on t he l e ft s i de ,

t he f o ur t h t o ol b ox 37 o n t h e ri gh t s i d e , a nd t he j a c k o pe ra t i on c o nt r ol

de vi c e 5 o n t h e r e a r si de , a n d t h u s t h e r e i s t h e p r ob l e m t ha t a re st r i c t i o n i s

i m p o se d o n t he p l a c e m e nt t he re of . Si nc e t he s wi ve l bo d y 5 0 t u r n s

ho ri z o nt a l l y a t t he t i m e o f w or ki ng a t he i g ht , t he i nt e r fe re nc e be t we e n t he

s wi ve l b od y 5 0 a nd t he s e m e m be r s a r o un d n e e d s t o be a v o i d e d a t t he t i m e

of t ur n i n g . Al t h o ug h t hi s p ro bl e m c a n be s up p re s se d b y m a k i ng t he l a t e r a l

wi dt h si z e s o f t he s e c o nd t o ol b ox 33 a n d f ou rt h t o ol b o x 3 7 s m a l l e r , t h e 2020200580

pr o bl e m s m a y oc c u r t ha t t h e s t o r a ge c a p a c i t i e s of t he s e t o ol bo xe s b e c om e

sm a l l e r a nd t ha t t h e wi dt h s o f st e p s u rf a c e s f or m e d by t he u pp e r s ur fa c e s

of t he t o ol b o xe s be c o m e na rr o w e r , s o t ha t i t i s di f fi c u l t fo r a op e ra t o r t o

wa l k up w he n g e t t i n g a bo a r d t he w or k p l a t f o rm .

[0 0 38 ] Me a n w hi l e , re du c i ng t he w i d t h of t he s wi v e l bo d y 50 c a n b e

t h ou g ht of , b ut be c a u se t he s wi ve l bo d y 5 0 su p p or t s t h e b oo m 1 9 , t he wo r k

pl a t f o rm 2 7 a t t a c he d t o t h e t i p t he re of , a n d s o o n , pr e d e t e rm i n e d s t r e n gt h

i s re qu i r e d of t he s w i v e l b o dy , a nd t h u s i t i s di ff i c ul t t o m a ke t h e s wi ve l

bo d y s m a l l e r . F u rt he r, a s t o c on t r ol va l v e s a n d c on t r ol de vi c e s f or

c o nt ro l l i n g t he b o om 1 9 t o ri s e a nd fa l l , t o e xt e n d a n d c on t r a c t , a nd s o o n,

i t i s t he m o s t c o nv e n i e nt t o pr ov i d e t he se o n t he s w i v e l bo d y 50 , a n d

ge ne ra l l y t h e se ha ve be e n a t t a c h e d t o t he o ut e r s ur fa c e s of t h e r i g ht a n d

l e f t si de p l a t e s of t he s w i v e l b od y 50 . H o we ve r , i f t h e se c o nt r ol v a l v e s a n d

c o nt ro l de vi c e s a re a t t a c he d t o t he ou t e r s ur fa c e s of t he si de p l a t e s o f t he

s wi ve l b o dy 5 0, t he re i s t h e p r ob l e m t ha t i n s t a l l a t i on s pa c e f o r t h e se c on d

t o ol b o x 3 3, t he fo u rt h t o ol bo x 3 7 , t h e j a c k o pe ra t i on c on t ro l d e vi c e 5 ,

a n d s o on i s re st ri c t e d t o b e na r r o we r.

[0 0 39 ] Ac c o r di ng l y, i n ge n ui t y i s e xe rc i s e d i n t h e c on fi g u ra t i o n of t he

s wi ve l b od y 5 0 i n t hi s f o r - w o rk - a t - he i g ht v e h i c l e 1 , a n d t hi s i n ge n ui t y wi l l

be de s c r i b e d be l o w w i t h re fe re nc e t o F I G S . 3 t o 7 s h o wi n g t he s wi ve l b o d y

50 e xt ra c t e d. FI G . 4 i s a c r o s s - s e c t i on a l vi e w of t he s w i ve l b o dy 50 a l o ng

a ve rt i c a l pl a n e e x t e nd i n g t h ro u g h t h e l a t e ra l m i d dl e o f t he s wi ve l b o dy 5 0

fr om f r on t t o re a r , w he n t he r i g ht s i d e t he re o f i s s e e n. T he s w i v e l bo d y 50

c om p ri se s a t u rn t a bl e 5 1 su p p o rt e d ho ri z o n t a l l y t u r na bl e o n t he ve hi c l e

bo d y 3 v i a a t u r n b e a ri ng , a t u r n dr i v e u ni t , a nd t h e l i ke ( no t s ho w n) , a n d

l e f t a n d ri gh t s i d e pl a t e s 5 2, 53 a re j o i n e d st a n di n g l a t e ra l l y wi t h a

pr e d e t e rm i n e d sp a c e a pa rt o n t o t hi s t u r n t a b l e 51 . T h e l e ft a nd ri gh t si de 2020200580

pl a t e s 5 2, 5 3 a re b i l a t e ra l l y s y m m e t ri c a n d h a v e a s ha p e i n w hi c h t h e i r

fr o nt e d ge s 52 a , 53 a l e a n ba c k wa r d e xt e n di ng u p wa rd o bl i q ue l y a nd i n

w hi c h t he i r re a r e d ge s 52 b , 5 3 b sl i g h t l y l e a n ba c k wa r d e xt e n di n g a l m o s t

ve rt i c a l l y . O n t he re a r s i d e o f t h e l e ft a n d r i g h t si de pl a t e s 52 , 5 3, a b a c k

pl a t e 5 5 e xt e n di n g ve rt i c a l l y i s pr o vi de d t o be j oi ne d t o c o n ne c t t he l e ft

a n d ri gh t s i d e pl a t e s 5 2, 5 3 . T he b a c k p l a t e 55 a t i t s up pe r p or t i on 5 6 c om e s

c l o s e t o t he r e a r e dg e s 52 b , 5 3 b of t he l e f t a n d r i g h t si de pl a t e s 5 2, 5 3

w hi l e i t s m i d dl e p o rt i o n 5 7 i s se t f ur t he r fo r wa r d t h a n t he re a r e d ge s 5 2 b,

53 b . It s l o we r p or t i on 5 8 i s l oc a t e d s o m e w ha t be hi n d t he m i d dl e po r t i on

57 . T hu s , a st or a g e s pa c e 5 0a op e n a t t he r e a r i s f or m e d t o be su r ro u nd e d

by t he l e ft a nd ri gh t s i de p l a t e s 5 2, 53 a n d t he b a c k pl a t e 5 5.

[0 0 40 ] Bo om s u p po rt h ol e s 52 c , 5 3c t o s up p or t a b o om s up p o rt s ha f t

19 a a re f or m e d i n t he u pp e r p or t i o n s of t h e l e ft a nd ri g ht s i d e p l a t e s 5 2,

53 . T h e bo om su p p or t s ha ft 1 9a i s i n se rt e d i nt o t h e b o om su p p or t ho l e s

52 c , 53 c t o b e s up p o rt e d , a n d t h e p r ox i m a l e n d o f t he bo om 19 i s pi vo t a l l y

c o up l e d a nd s u p po rt e d vi a t he bo om s up p o rt s ha ft 19 a b e t we e n t he l e f t a nd

ri gh t si de pl a t e s 52 , 53 a s sh o w n i n FI G . 1 . A s a re s ul t , t h e b o om 19 i s

s up p or t e d b y t he s wi ve l b o dy 5 0 s u c h t ha t t he b o om c a n be ra i s e d a n d

l o we re d .

[0 0 41 ] T he up pe r p or t i o n 56 o f t he ba c k p l a t e 55 i s f o rm e d l i ke a

re c t a ng ul a r b ox e xt e n di n g l a t e r a l l y t o be st re ng t h e n e d a s se e n f ro m i t s

c r o s s- s e c t i on s ha pe i n F I G. 4 . A pa i r o f ri gh t a nd l e f t l o we r l e v e l i n g

c yl i n de r s u p po rt m e m b e r s 61 a re pl a c e d i n pa ra l l e l a p re de t e r m i n e d s pa c e

a pa rt o n t h e u p pe r p o rt i o n 5 6 st r e n gt he ne d a s a bo v e . In t h e l o w e r l e v e l i n g

c yl i n de r s up p or t m e m b e r s 6 1, l o we r l e v e l i n g c y l i n de r s u pp o rt h ol e s 6 1a

a re f or m e d , i nt o w hi c h a l o we r l e ve l i n g c y l i nd e r s u p po rt s h a f t i s i n se rt e d ,

a n d a l o we r l e ve l i ng c yl i n de r 26 i s p i vo t a l l y c o u pl e d a nd s u pp o rt e d v i a t hi s 2020200580

l o we r l e ve l i ng c yl i n de r s u pp o rt s ha f t . A s s h o wn i n F I G . 1, t h e l o we r

l e v e l i n g c y l i n de r 26 i s pi vo t a l l y c o up l e d a t t he t i p t o t he l o we r su rf a c e of

t he bo om 19 a n d i s e x t e nd e d a n d c on t r a c t e d a c c or di n g t o t he ri se a n d fa l l

of t h e b oo m 1 9 . O pe ra t i n g oi l s up pl i e d a nd di s c h a r ge d f r om t he l o we r

l e v e l i n g c yl i n de r 2 6 e xt e n de d a n d c on t r a c t e d a s a bo ve i s s e nt t o a n up pe r

l e v e l i n g c yl i n de r 2 5 t o e xt e n d a n d c on t ra c t t hi s c y l i nd e r , a n d t he ve rt i c a l

po s t 29 i s he l d ve r t i c a l re ga rd l e s s o f t he ri s e or f a l l o f t he b o om 1 9 s o t ha t

t he w or k pl a t f o rm 2 7 i s he l d h o ri z o nt a l .

[0 0 42 ] T he l o we r po rt i on 5 8 o f t he b a c k pl a t e 5 5 i s a l so f o rm e d l i ke a

re c t a ng ul a r b ox e xt e n di n g l a t e r a l l y t o be st re ng t h e n e d a s se e n f ro m i t s

c r o s s- s e c t i on s h a p e i n F I G . 4 . A pa i r o f ri gh t a n d l e f t ra i s i n g a n d l o we ri n g

c yl i n de r s u p po rt m e m b e r s 63 a re pl a c e d i n pa ra l l e l a p re de t e r m i n e d s pa c e

a pa rt o n t he l o we r p o rt i o n 58 s t re ng t h e n e d a s a b o ve . I n t h e r a i s i n g a n d

l o we ri n g c yl i n de r s up p o rt m e m be r s 6 3 , ra i s i n g a n d l o we ri n g c yl i n de r

s up p or t h ol e s 6 3 a a re f or m e d, i n t o w hi c h a ra i si n g a n d l o we ri n g c yl i n de r

s up p or t s ha ft i s i n se rt e d , a nd a r a i si n g a n d l o we ri ng c yl i n de r 2 3 i s p i v ot a l l y

c o up l e d a nd s u pp o rt e d v i a t hi s ra i s i n g a n d l o we ri ng c yl i nd e r s up p or t sh a f t .

A s a b ov e , t he l o w e r l e v e l i n g c yl i n de r 2 6 a nd t h e ra i si n g a n d l o we ri n g

c yl i n de r 2 3 a re fi rm l y a n d st a b l y su p p or t e d b y t he u p pe r p o rt i o n 5 6 a n d

l o we r p or t i on 5 8 o f t h e b a c k p l a t e 5 5 f o rm e d l i ke a re c t a n g ul a r b ox t o b e

st re n gt he ne d . F u rt he r, si nc e t he up pe r p o rt i o n 5 6 a n d t h e l o w e r p or t i on 58

a re st re ng t h e n e d a s a b o ve , e ve n w he n t he m i d dl e p o rt i o n 57 o f t he ba c k

pl a t e 5 5 i s se t fo r wa r d t o fo rm t he st or a g e s pa c e 5 0a , t he st re ng t h o f t h e

s wi ve l b o dy 50 c a n be k e pt .

[0 0 43 ] F I G. 7 s ho w s t h e s t a t e wh e r e c o n t r ol de vi c e s 6 0 su c h a s c on t r ol

va l ve s a n d a c o nt ro l l e r f o r c o nt ro l l i n g t h e ri s e a n d fa l l , e x t e n s i o n a n d

c o nt ra c t i o n, a n d s o o n of t he b oo m 1 9 a r e p l a c e d i n t he st or a g e s p a c e 5 0a 2020200580

of t he s wi ve l b od y 5 0 o f t he a bo v e c o nf i g u ra t i o n . T h e se c on t r o l de vi c e s 6 0

a re pl a c e d i n wa rd of t he c y l i nd r i c a l l oc u s s ur fa c e d e sc ri be d b y t he re a r

e d ge s 5 2b , 5 3b o f t h e l e ft a nd r i g ht s i d e pl a t e s 5 2, 5 3 w he n t he s wi ve l b o dy

50 i s t ur ne d . B y t h i s m e a n s , t he c on t r ol de vi c e s 6 0 c a n be p ro t e c t e d b y t he

l e f t a n d ri gh t s i d e pl a t e s 5 2, 5 3 f r om i n t e rf e r i ng wi t h s u rr o un di n g m e m be r s

a t t he t i m e o f t u r ni ng . A l t ho u g h F I G S . 1, 2 , a n d 7 s h o w t he st o ra ge s pa c e

50 a of t he s wi ve l b o d y 50 e xp o se d fo r e a s i n e s s of d e sc ri pt i o n , a s s ho w n i n

F I G. 7 , w i t h t h e c o nt r ol de vi c e s 60 be i n g p l a c e d i n t he st o ra ge sp a c e 5 0a ,

a c o ve r t o c ov e r t h e se m a y be a t t a c he d t o t he re a r s ur fa c e of t h e s w i v e l

bo d y 5 0 .

[0 0 44 ] Al t h o u gh a p re fe rr e d e m b o di m e nt a c c o r di n g t o t h e p re se nt

i n ve nt i o n ha s b e e n de s c r i b e d a b ov e t a ki ng t he f o r - w o rk - a t - he i g h t v e h i c l e

1 a s a n e x a m pl e , t he p re se n t i n ve nt i o n i s n ot l i m i t e d t o t h e a b o ve

e m b o di m e nt . F o r e x a m pl e , a ve hi c l e o f t he c o nf i g u ra t i o n w he re a bo om f or

a c ra ne i s a t t a c he d t o be a bl e t o r i s e a n d fa l l t o a s wi v e l b od y , l i ke a c r a n e

ve hi c l e i s a l so a n e m b od i m e n t o f t he p re s e nt i nv e n t i on l i ke wi s e .

[0 0 45 ] T he i n ve nt i o n be i n g t h u s de sc ri b e d , i t wi l l be o b vi o u s t ha t t he

sa m e m a y be v a r i e d i n m a ny wa y s . S u c h va ri a t i on s a r e n ot t o b e r e ga r de d

a s a de pa rt ur e fr om t he s pi ri t a nd s c op e of t h e i n ve nt i o n , a nd a l l s uc h

m o di fi c a t i o n s a s w o ul d be ob vi o u s t o on e sk i l l e d i n t he a rt a r e i nt e n de d t o

be i nc l u de d wi t hi n t he sc o pe o f t he f ol l o w i ng c l a i m s.

Claims (10)

1. In a working vehicle comprising: (i) a swivel body attached to a vehicle

body of a travelling vehicle to be horizontally turnable , (ii) a boom attachable 2020200580

at least to be able to rise and fall relative to the swivel body, (iii) a cylinder to

raise and lower the boom being located on an under side of the boom, the

cylinder having a tip at a distal end of the cylinder, pivotally coupled to a lower

surface of the underside the boom, and a proximal end attachable to the swivel

body, and (iv) a working device attachable to the boom;

the swivel body includes:

a turn table supported to be horizontally turnable on the vehicle

body;

a pair of right and left side plate members provided standing side

by side with a predetermined lateral spacing on the turn table;

a back plate member provided connecting rear portions of the pair

of right and left side plate members, the back plate member having an upper

portion, a middle portion and a lower portion;

a proximal end of the boom being able to be turnably supported via

a boom support shaft attac hably connectable to the pair of right and left side

plate members;

the upper portion of the back plate member being provided to be

close to rear edges of the pair of right and left side plate members ; and

the middle portion of the back plate member being formed to be set

further forward than the rear edges of the pair of right and left side plate

members in side view, and further forward than the upper portion of the back

plate; wherein:

(A) a storage space open at the rear is formed to be surrounded

by the back plate member and the pair of right and left side

plate members; and

(B) the lower portion of the back plate member includes a box

portion extending laterally and rectangular in cross-section 2020200580

to support the raising and lowering cylinder, whereby the

proximal end of the raising and lowering cylinder is ab le to

be supported by the lower portion of the back plate.

2. In a working vehicle according to claim 1, the boom support shaft

is locatable in upper edges of the pair of right and left side plate members and

above the upper portion of the back plate member.

3. In a working vehicle according to claim 1 or 2, the swivel body

includes a pair of parallel spaced raising and lowering cylinder support

members that surmount the box portion of the lower portion of the back plate

member for firmly and stably connecting the proximal end of the raising and

lowering cylinder thereto, wherein upper ends of the raising and lowering

cylinder support members are fixedly attached to the lower end of the middle

portion of the back plate member and opposing lower ends of the raising and

lowering cylinder support members are fixedly attached to the turn table,

straddling the box portion,

4. In a working vehicle according to any one of the preceding claims,

the working vehicle further comprising a lower leveling cylinder being

extendable and retractable to maintain the working device in a horizontal

position, the lower leveling cylinder having a proximal end for pivotal coupling

to the swivel body;

wherein the proximal end of the lower leveling cylinder is able to be

supported by the upper portion of the back plate member ;

and wherein the upper portion of the back plate member includes

an upper box portion extending laterally and being rectangular in cross-section 2020200580

for pivotally supporting the proximal end of the lower leveling cylinder.

5. In a working vehicle as claimed in claim 4, the swivel body includes

an upper pair of parallel spaced lower leveling cylinder support members that

surmount the upper box portion of the upper portion of the back plate member

for firmly and stably connecting the proximal end of the lower leveling cylinder

thereto, wherein upper ends of the lower leveling cylinder support members are

fixedly attached towards the rear of the upper box portion and opposing lower

ends of the lower leveling cylinder support members are fixedly attached to the

front of the upper portion of the back plate member, straddling the upper box

portion.

6. A swivel body for attaching to a vehicle body of a working vehicle

or other body, the body comprising: (i) a boom attachable to the swivel body to

be able to rise and fall relative to the swivel body, (ii) a raising and lowering

cylinder to raise and lower the boom being located on an under side of the boom ,

the raising and lowering cylinder having a proximal end attachable to the swivel

body, and (iii) a working device attached to the boom ; the swivel body

including:

a turn table for being supported to be horizontally turnable on the

vehicle body;

a pair of right and left side plate members standing side by side on

the turn table with a predetermined lateral spacing for turnably supporting a

proximal end of the boom via a boom support shaft attachably connectable to

the side plate members;

a back plate member connecting rear portions of the pair of right

and left side plate members, the back plate member having an upper portion, a 2020200580

middle portion and a lower portion;

the upper portion of the back plate member being provided to be

close to rear edges of the pair of right and left side plate members; and

the middle portion of the back plate member being formed to be set

further forward than the rear edges of the pair of right and left side plate

members in side view, and further forward than the upper portion of the back

plate;

wherein:

(A) the back plate member and the pair of right and left side plate

members form a storage space open at the rear of the swivel

body;

(B) the lower portion of the back plate member includes a

laterally extending box portion rectangular in cross-section

for pivotally supporting the proximal end of the raising and

lowering cylinder.

7. A swivel body as claimed in claim 6, wherein the boom support shaft

is locatable in upper edges of the pair of right and left side plate members and

above the upper portion of the back plate member.

8. A swivel body as claimed in claim 6 or 7, including a pair of parallel

spaced raising and lowering cylinder support members that surmount the box

portion of the lower portion of the back plate member for firmly and stably

connecting the proximal end of the raising and lowering cylinder thereto,

wherein upper ends of the raising and lowering cylinder support members are

fixedly attached to the lower end of the middle portion of the back plate member

and opposing lower ends of the raising and lowering cylinder support members 2020200580

are fixedly attached to the turn table, straddling the box portion,

9. A swivel body as claimed in any of claims 6 to 8, the working vehicle

further comprising a lower leveling cylinder being extendable and retractable

to maintain the working device in a horizontal position , the lower leveling

cylinder having a proximal end for pivotal coupling to the swivel body ;

wherein the proximal end of the lower leveling cylinder is able to be

supported by the upper portion of the back plate member;

and wherein the upper portion of the back plate member includes

an upper box portion extending laterally and being rectangular in cross-section

for pivotally supporting the proximal end of the lower leveling cylinder.

10. A swivel body as claimed in claim 9, including an upper pair of

parallel spaced lower leveling cylinder support members that surmount the

upper box portion of the upper portion of the back plate member for firmly and

stably connecting the proximal end of the lower leveling cylinder thereto,

wherein upper ends of the lower leveling cylinder support members are fixedly

attached towards the rear of the upper box portion and opposing lower ends of

the lower leveling cylinder support members are fixedly attached to the front

of the upper portion of the back plate member, straddling the upper box portion.