close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2109392

код для вставки
Feb. 22, 1938.
c. LE BLEU ‘
1mm
HYDRAULICALLY CONTROLLED DIRT MOVING MAC
Filed May 21, 1935
2,109,392
2 Sheets-Sheet 2
$3
3
a
a
Z.
"2.
Z”
z
%
W,
.
a
/.\\ \
62
Patented Feb. 22, 1938
' 2,109,392
UNITED STATES
PATENT OFFICE
2,109,392
HYDRAULICALLY
CONTROLLED DIRT MOV
ING
MACHINE
,
Charles Le Bleu, Los Angeles, Calif.
Application May 21, 1935, Serial No. 22,529
7 Claims. (0!. 37—144)
This invention- relates to machinery for mov
ing dirt and the like, and particularly pertains individual track laying units may swing vertically
to a hydraulically controlled
dirt moving ma
around the axis of the axle l8 and'may swing
chine.
'
separately. The front and rear axles are mount
ed in suitable bearings on frame units 20. Dis~
posed in advance of the tractor is a scraper blade
tion, and at a desired level as the machine ad
vances. The blade 2! is provided at a point inter
mediate its ends with brackets 22 receiving a king
The king pin extends vertically through a' 10
central opening in a transverse bolster 24, the
V15
20
26 in a desired set position.
The invention contemplates the provision of a‘
tractor of the self-laying track type, and which
tractor carries a scraper blade disposed trans
25
ends from the separate track laying units, said
articulate connections also including hydraulical
35
30
_ly controlled means by which the blade may be
-moved.
40
2
2,109,392"
the central passageway 59 communicates with a
as shown in Fig. 2 of the drawings, are formed
with a pair of upper arms 41 and 45 which are
pipe 53 the ?uid will then ?ow through pipe 53
to the control valve 55. It will be assumed that
parallel to each other and extend along opposite
at that time the rotary element of the control .
sides of the track laying units. Their upper ends
carry pivot pins 49 by which they are connected
to thrust links 50 and 5|. These links extend
rearwardly and are pivotally connected upon
trunnions 52 and 53 which extend from opposite
sides of the cylinders 40 and 45 respectively. By
this arrangement it will be seen that if a ?uid un
der pressure is introduced into the cylinders 45
and 45 at one end thereof this ?uid will act
against the piston 54 carried by piston rod 39 so
that the cylinder will shift longitudinally and
slide with relation to the piston. The sliding
15 movement of the cylinder will impart motion
to the thrust links 50 and 5| to swing the upper
valve 55 is in the solid line position shown inFlg.3.
The ?uid will theri ?ow through the passageway
55 into the pipe 59 and thence through pipe 10 to
the passageway 15 of piston rod 39 within the
cylinder 45.’ This will force the cylinder 45 in
a counter-direction since the piston 54 of that
cylinder is immovable. The ?uid in the oppo
site end of the cylinder 45 will then be displaced
and will be forced outwardly through the pas
sageway 15 into pipe 13 and thence through pipe 15
1| into the passageway 51 of the rotary valve
element of the control valve 55. Fluid will then
?ow along the pipe 14 to the passageways 15 of
the piston rod 39 within the cylinder 45. This will
arms 41 and 48 of the bell cranks 32 in a cor
20
responding direction. As this swinging motion
takes place the blade 2| will be correspondingly
raised or lowered.
cause the cylinder 45 to move rearwardly in a 20
corresponding direction to cylinder 45. The ?uid
.;
on the opposite side of the piston within the
cylinder 40 will be displaced and ?ow outwardly
through passageway 15 in the piston rod to the
pipe 54, and then to the master valve where it 25
of this ?uid is maintained in a tank 55 from which will ?ow .into the exhaust pipe 52 through the
it is drawn by a pressure pump 55. This pump as I passageway 50 of the rotary valve element of
25 shown in Fig. 3 of the drawings connects with a the master valve 51. The movement of the two
master valve 51 through a pipe 58. The valve pistons in a rearward direction will act through
is provided with a rotary valve element having a the ‘thrust links 50 and 5| to draw rearwardly 30
upon the upper arms 41 and 45 of the bell cranks
central passageway 59 therethrough and oppo
32. This will coordinately lift the scraper blade ,
site
side
passageways
55
and
5|.
The
central
30
2|. If the rotary element of the master valve is
passageway 59 which normally establishes com
munication between a pipe 55 and an exhaust moved so that central passageway 59 communi
pipe 52 permits the ?uid to pass to the supply cateswith the. pipe 54 a reverse action will be 35
applied due to the fact that the ?uid under pres
tank 55. The valve 51 also is provided with pres
sure pipes 53 and 54. The pipe 54 is here shown sure will enter the passageway 15 of the piston
35 as leading to the forward end of the piston 39 ' rods of both cylinders 45 and 45 from the pipes
and 13 respectively. This will force the cylin
in cylinder 40. The pipe 53 is shown as leading 54.
to the housing of a control valve 55. The rotary ders 49 and 45 forwardly and swing the bell 40'
member of the valve 51 may be moved from its cranks 32 downwardly to lower the scraping
blade 2|. If the rotary element in the control
neutral position to a position bringing the pas
sageway 59 into register with the pipe 54 or into valve 55 is moved to its dotted line position and
register with the pipe 53, at which time the one the rotary element of the master valve 51 is
of the pipes 53 or 54 which is not in register with moved to bring the central passageway 59 into 45
the passageway 59 will register with the exhaust register with the pipe 53 it will be seen that pres
pipe 52 through valve passageways 55 or 5| as sure ?uid will pass from pipe 53- through valve
45 the case may be. The control valve 55 has a passageway 55 of valve 55 and then into the
The cylinders 40 and 45 are intended to be
operated by ?uid under pressure. A reservoir
55 and 51. The element is shown in one of its
positions in solid lines in Fig. 3 and in the other
pipe 12 connecting with pipe 13. This vwill con
duct the ?uid to the piston passageway 15 at the 50
forward end of the cylinder 45, thus creating a
position in dotted lines. A pair of outlet pipes
pressure in advance of the piston 54 of that cylin
on one side therepf and are connected with a pipe
15 leading to the rear end of the piston rod 39
placed ?uid upon the opposite side of the piston
within the cylinder 45 will then ?ow through pipe 55
15 to the pipe 15 and into the control valve 55
rotary, valve element provided with passageways
50 as and as communicate with the valve housing ' der to move the cylinder 45 forwardly. The dis
55
of cylinder 45. Diagrammatically opposite the
pipes 58 and 59 are pipes 1| and 12 respectively
with a pipe
13 leading to the opposite end of the piston rod 39
of cylinder 45. The pipes 58 and 59, and the
pipes 1| and 12 are intended to be alternately
through a pipe 55. Fluid will then pass through
the passageway 51 of the rotary valve element
and into the pipe 14 which communicates with
the passageway 15 of the piston rod 39. Fluid 60
pressure will then act in‘the rear of the cylinder
45 to move it in an opposite direction from the
positions of the rotary valve element of the direction in which cylinder 45 is simultaneously
control valve 55. Diagrammatically opposed to moving. The displaced ?uid at the forward end
the pipe 53 in the housing of the valve 55 is a of cylinder 45 will pass through the pipe 54 to the 65
pipe 14 which leads to the rear end of piston 39 master valve 51 and then through valve passage
of the cylinder 45. By reference to Fig. 3 of way 59 to the exhaust pipe 52. By moving the
65 the drawings it will be seen that longitudinal pas
rotary valve element of the master valve 51 to
sageways 15 and 15 occur in‘ the portions of the bring its passageway 59 into register with the
piston rods 39 upon opposite sides of the pistons pipe 54 a reverse action will be produced in the
cylinders 40 and 45. By this arrangement it will
In operation of the hydraulic mechanism a be seen that power means are provided for posi
70 suitable incompressible ?uid is placed within the tively lifting and lowering the opposite ends of
tank 55. This is continuously circulated through the blade 2|.
'
It will thus be seen that by the structure here
the master valve 51 from pipe 58 to pipe 52 and
returning to the'tank. In the event the rotary shown it is possible to positively and conven
element of the master valve 51 is moved so that‘
closed or opened as the case may be in the two
ton, the , opposite
‘3
ends of. the cylinder being ‘
closed to form pressure ?uid
or _ bell cranks, one
chambers;
a’ pair
"
10
to said frame, and a transversely disposed blade
carried by said frame.
10
15'
20
pivotally connected with said track’
laying units at their lower ends, operating levers
pivot-ally inounted on said links of the separate
25
25
30
30
35
40
'40
45
'50
its ends, a cylinder
I moiznted on each of said pistons {or longitudinal
h relation thereto, an
55
60
65
70
70
75
.said frame, 8
ried by each of said track laying, units, a. piston
rod extending longitudinally‘ 01' each" track lay
9,109,892
at the rear thereof and to a link at the‘i’orward
end thereof, a piston carried on the piston rod
at a point intermediate its ends, a cylinder
by each track laying unit, a link carried at the
forward end of each track laying unit, a piston
rod connected to one of said uprights at its rear
end and to one 01 said links at its forward end,
a piston carried on the piston rod at a point in
mounted on each of said pistons for longitudinal
reciprocating motion with relation thereto, a
of said pistons for longitudinal reciprocating mo
ing unit and pivotally connected to the upright
source of ?uid
under pressure, conduits there- _ tion with relation thereto, a link connecting each
from connected with the pressure chambers in
of said cylinders with one oi said operating levers,
the opposite ends of the cylinders, a ?rst and a
a source of ?uid under pressure, conduits there
the ?ow oL?uid from the source of ?uid supply
from connected with the pressure chambers in
the opposite ends of the cylinders, a ?rst and sec
ond valve means interposed in said conduits, said
?rst valve means adapted to selectively direct the
?ow of ?uid from the source of ?uid supply to 15
interposed in said conduits,
said ?rst valve means adapted to selectively direct
to one end of one of the cylinders, or to the sec
ond valve means, said second valve means being
adapted to be selectively controlled to direct the
15 pressure ?uid into the same ends of bothvcylin
10
one end of one of the cylinders, or to the sec
ond valve means, said second valve means being
ders or into opposite ends of both cylinders
adapted to be selectively controlled to direct the
whereby the cylinders will shift simultaneously
pressure ?uid into the same ends of both cylin 20
ders or, into opposite ends of both cylinders
in the same or opposite directions;
20
on each
'I. A hydraulically operated dirt moving ma
- chine comprising a tractor,
separate track laying
units at opposite sides thereto, a dirt moving
member disposed transversely of the front of the
tractor, a frame member articulately connecting
the dirt moving member with the tractor for
25 raising, lowering and tilting movement, operat
ing levers pivotally mounted on the separate
track laying units and connected at their for
ward ends to said irame, rigid uprights carried
whereby the cylinders will shiit simultaneously
in the same or opposite directions, and means
whereby the ?rst named valve means may be
operated to return said valve to a neutral position 25
to cause a ?uid lock of the cylinders and a by
pass of ?uid through the valve whereby the frame
may be held in any of its desired set positions.
CHARLES LE BLEU.
Документ
Категория
Без категории
Просмотров
0
Размер файла
591 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа