close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2108947

код для вставки
Feb. 22, 1938.
2,108,947
T. SEIFER
` HYDRAULIC MOTOR FOR DEEP BORING MECHANÍSMS
Filed NOV. 26, 1935
171g]
a
2 sheets-sheet 1
Feb. 22, 1938.
T. sElFER
HYDRAULIC MOTOR FOR DEEP BORING MECHANISMS
_Filed NOV. 26, 1935
17719’. 3
2 Sheets-She@~ 2
Y m
b
l.
@nmJ
2,108,947
Patented Feb. 22, 1938
UNITED sTATEs
PATENT OFFICE
2,108,947
HYDRAULIC MOTOR. FOR DEEP-BORING
MECHANISMS
Theo Seifer, Berlin, Germany
Application November 26, 1935, serial No. 51,633
In Germany February 27, 1935
9 Claims.
This invention relates to hydraulic motors for
.deep-boring mechanisms, more especially to such
hydraulic motors in which a cylinder carrying the
bit is vertically reciprocated by means of a
5 ñushing fluid the ñow of which is controlled by
means of a valve or valves.
'
'I'he object of my invention is to release the
valve or valves controlling the flow of the ñush
ing liquid from the hydraulic pressure.
10
According to my invention I provide an auxil
iary valve and a main valve controlled by the
variation of the conditions of hydraulic pressure
taking place when the auxiliary valve is opened '
or closed.
The main valve is according to my invention
15
not only released from pressure but may also be
protected against the concussions of moving
Water, because a small span of time intervenes
between the closure of one valve and that of the
20 other, the cylinder already rising in _the mean
time and being charged with water, (provided
that the dimensions are correspondingly chosen).
Referring now to the drawings which are for
illustrative purposes only,
25
Fig. 1 is a vertical cross-section through a part
of the cylinder, the latter being in its highest
position.
Fig. 2 shows the same parts a's Fig. 1, with the
cylinder in its lowest position.
Fig. 3 illustrates another modification.
30
Fig. 4 shows the valve according to Fig. 3, the
cylinder assuming its lowest position.
Fig. 5 illustrates a complete boring mecha
nism including the chisel.
In Fig. 1, a is the hollow boring tubing
35
through which the `flushing and driving water is
introduced into the cylinder. b is the cylinder
of the hydraulic motor which is firmly connected
lwith the chisel and in which the piston d may
with collar-like enlargements n.
At the lower
end of the tubing a, levers o1 and o2 are ful
crumed cooperating with the rest i and sliding
with rolls q on the outer surface of the cylinder l.
T1, T2, T3 are controlling springs of which r1 rests
on the control rod h2. s is a bore in the valve g2.
When the valves gi and g2 are closed the water
ñows from the tubing a into the interior of the
cylinder b above the piston d (position'shown in
Fig. 2). The cylinder is lifted together with the 10
chisel (Fig. 5). It pushes upwards the rod h2
which strikes upon the lower end of the rod h1.
On further raising the cylinder b the spring n
is more and more compressed, the levers o1 rest
ing on the upper side of the collar i. As soon as 15
the .lower enlargement n of the cylinder l reaches
the rolls q, the latter are displaced aside and the
collar i is released from the levers o1. Now the
compressed spring r1 may open the valve g1 so
that the water is allowed to flow olf from the
chamber formed above the valve y1.
The valve g2 was hitherto pressed upwards
against its seat, its lower surface being greater
than its upper surface. The hydraulic pressure cf
the water was, during this period, assisted' by
the spring r3. After the valve g1 is opened a
hydraulic pressure acts upon the upper surface
of the valve gz, the bore s letting less water flow
01T than the quantity of water flowing in through
the tubing a. After opening the valve g2 the
ñushing water> flows off rapidly through the ports
f1 down to the chisel and the cylinder sinks
down under the action of its own weight. The
rolls q again roll off on the middle part of the .a
cylinder l, the levers 01 taking a position be- `
neath the collar z' and keeping the Valve g1 opened
even when the compression of the spring rl
ceases. This position of the levers and valves is
illustrated in'Fig. 1 in which the rests of the
40 slide. The piston d is ñxed to the tubing œ. levers 01 are shown lying under the collar i. ~ The
The piston divides the interior of the cylinder valve y1 is closed only when the rolls g roll upon
into two chambers. e are openings in the tubing l the upper enlargement of the cylinder l and the
a through which the ñushing water` enters the levers oi again release the collar i whereupon
upper chamber of the cylinder. f1 and fz are the hydraulic pressure again acts on the lower
45 ducts through which the flushing water is trans
surface of the valve gz that is now likewise closed.
ferred to the lower chamber of the cylinder b.
In Figs. 3 and 4 the surfaces of the valve cham
The tubing a is widened beneath the piston d
ber which are touched by the surfaces- of the
to form a chamber in which the main valve gz
valves when closed are in another position than
and the secondary valve g1 are arranged. The
50 valve g1 is firmly connected to the valve rod h1 in the modification shown in Figs. 1 and 2.
In4 Figs. 3 and 4, a is the hollow tubing, b the
on which a collar i is provided. A c I_inder l
cylinder sliding on the piston d. e is an opening
closed by a bottom m is concentrically c nnected
with the cylinder b. In the bottom m ducts for in the tubing a through which the iiushing water
leading the water to the chisel are provided. At is introduced into the cylinder above the piston.
l55 its upper and lower` end the cylinder l is equipped
f1 and f2 are openings through which the ilush
55
2
2,108,947
in connection with the opening and closing of the
' g1 is the auxiliary valve and yz the main valve.
3. In an impact boring mechanism actuated by
flushing fluid the combination of a tubing, a
piston mounted thereon, a cylinder slidably
mounted on said piston, a boring tool carried by
said cylinder and valve means for reversing the
iiow of fluid to said cylinderto cause reciproca
tion thereof, said valve means comprising a main
valve in the said tubing provided with an axial
bore of a diameter smaller than the inner diam
h1 and 'hz are the two parts of the valve rod.
Part h1 is provided with a` collar i. l is a cyl
_inder connected with cylinder b and provided
with enlargements n. m is a disk provided with
ports for the flushing water through which cyl
inder l communicates with cylinder b. Q1 and
Ozrare levers fulcrumed at the lower end"of the
tubing a and cooperating with the collar i. The
15
I
-
eter of the tubing, an auxiliary valve in the tub
or lowered., r1, r2, and r3 are controlling springs.
to be closed by the main valve, a second chamber
In the modification shown in Figs. 3 and 4 the
Y valve g1 is> closed by the valve rod hi, h2 and the
Vspring T1 when the cylinder has been raised.
Now the valve yz is thrown upwards because the
beneath the iirst one adapted to be closed by the
auxiliary valve both chambers being provided
lower surface is greater than the upper one.
ing beneath the main valve, a chamber adapted
with outlet ducts, the main valve being controlled
by the variation of the hydraulic pressure in con
nection with the opening and closing of the auxil
iary valve.
20
the cylinder drops down. Hereby the spring r1
is released and in the corresponding relative
ñushing iiuid the combination of a tubing, a
position o_f Athe roll q and the cylinder the valve
piston ymounted thereon, a cylinder slidably
g1 Yis pressed downwards and opened by the hy
mounted on said piston, a boringl tool carried by
said cylinder and valve means for reversing the 25
ilow of fluid to said cylinder to cause reciproca
25 draulic pressure andY under the action oiîA the
spring r2 so that now the water pressure beneath
vthe valve 9': is reduced and the valve y2 is closed,
whereupon the cylinder‘is again lraised'.
By dividing the valve rod into two sections h1
and h2 it is possible to insert any desired free play
between the lowest position of the cylinder and
its position in the moment when the compression
of the spring r1 begins.
'
As shown in Fig. 4, the valve g2 may be shaped
to form a solid body, in which case the duct s`
may be formed by a cavity in the wall of 'the
tubing connecting the space beneath the valve
gz with the space above this valve. r3 is a clos
ing spring'in Figs. 1 and 2 and an opening spring
40 in Fig. 3.
'
I claim :_
1. In a boring mechanism, the combination of
a tubing through which the flushing `iiuid flows,
45
auxiliary valve.-
levers 02 roll by rolls q upwards and downwards
on the cylinder l when the cylinder b is raised
'20 The flushing water now largely runs out and
so
,
ing water flows from the interior of the tubing a
beneath the piston d into the cylinder b.
a piston on the said tubing, a cylinder sliding over
the piston, a main valve’ in the said tubing, a
chamber in the tubing beneath the valve seat,
apertures being provided in the said chamber for
the discharge of the iiushing iiuid, an auxiliary
50 valve in the said chamber, a rod extending from
the body of the auxiliary valve and a _second rod
adapted to be lifted with the cylinder and adapted
to strike the ñrst named rod thereby opening the
auxiliary valve after the cylinder has passed a
55 certain way from its lowest position, the main
valve being actuated by the variations of the hy
draulic pressure connected with the opening and
closing of the auxiliaryvalve.
2. In an impact boring mechanism actuated by
60 flushing iiuid the combination c-f a tubing, a. pis
ton mounted thereon, a cylinder slidably mounted
on said piston, a boring tool carried byv said cyl
inder and valve means for reversing the flow of
lluid to said cylinder to cause reciprocation there
65 of, said valve means comprising a main valve 4and
an auxiliary' valve in said tubing, a chamber
adapted to be closed by the main valve, a second
chamber beneath the ñrst one adapted to be
closed by the auxiliary valve both chambers being
provided with outlet ducts, a rod extending from
the body of the auxiliary valve and adapted to be
lifted by the cylinder to open the auxiliary valve
after the cylinder has passed a certain way from
its lowest position, the main valve being con
75 trolled by the variation of the hydraulic pressure
. 4. In an impact boring mechanism actuated by
' tion thereof, said valve means comprising a main
Valve in the said tubing the body of which has a
lower surface greater 'than its upper surface, an
auxiliary valve in the tubing beneath the- main 30V
valve, a chamber adapted to be closed by the
main valve, a second chamber beneath the iirst
one adapted to be closedY by the auxiliary valve
both chambers being provided with outlet ducts,
the main valve being controlled by the variation
of the hydraulic pressure in connection with the
opening and closing of the auxiliary valve.
5. In an impact boring mechanism actuated by
flushing iiuid the combination of a tubing, a pis
ton mounted thereon, a cylinder slidably mounted 40
on said piston, a boring tool carried by said cyl
inder and valve means for reversing the flow of
ñuid to said cylinder to cause reciprocation there
of, said valve means comprising a main valve in
the said tubing the body of which is provided with 45
an axial bore of a diameter smaller than the
inner diameter of the tubing and has a lower sur
face greater than its upper surface, an auxiliary
valve in the tubing beneath the main valve, a
chambenadapted to be closed by the main valve, 50
a second chamber beneath the ñrst one adapted '
to be closed by the auxiliary valve both chambers
being provided with outlet ducts, the main valve
being controlled by the variation of the hydraulic
pressure in connection with the opening and clos
ing of the auxiliary valve.
6. In an impact boring mechanism actuated by
55
iiushing fluid the combination of a tubing, a pis
ton mounted thereon, a cylinder slidably mount
ed on said piston, a boring tool carried by said 60
cylinder and valve means for reversing the flow
of ñuid to said cylinder t`o cause reciprocation
thereof, said valve means comprising‘a main valve
in the said tubing adapted to control the motor
and provided with a spring actuating the said 65
valve, and an auxiliary valve in the tubing be
neath the main valve, a chamber adapted to be
closed by the main valve, a second chamber be
neath the first one adapted to be closed by the
auxiliary valve both chambers being provided 70
with outlet* ducts, a rod extending from the body
of the auxiliary valve and adapted to be lifted by
the cylinder to open the auxiliary valve after the
cylinder has passed a certain way from its lowest
position, the main valve being controlled by theA 75
2,108,947
3
variation of the hydraulic pressure in connection neath the main valve, a chamber adapted to be
with the opening and closing of the auxiliary ‘closed by the main valve. a second chamber be
neath the first one adapted to be closed by the
Valve.
'7. In an impact boring mechanism actuated auxiliary valve both chambers being provided4
by iiushing ñuid the combination of a tubing. a with outlet ducts, a rod extending from the body 5
piston mounted- thereon, a cylinder slidably ' of the auxiliary valve and adapted to be lifted
mounted on said piston. a boring tool carried by by the cylinder to open the auxiliary valve after
said cylinder and valve means for reversing the the cylinder has passed a certain way from its
lowest position, the main valve being controlled
iiow of fluid to said cylinder _to cause reciproca
10 tion thereof, said valve means comprising a main by the variation oi the hydraulic pressure in- con 10
valve in the said tubing adapted to control the nection with the opening and closing of the aux
`
motor and provided with a spring adapted to open iliary valve.
9. In an impact boring mechanism actuated by
_the said valve, and an auxiliary valve in the tub
ing beneath the main valve,4 a chamber adapted flushing ñuid the combination of a tubing, a pis
ton mounted thereon, a cylinder slidably mount
15 to be closed by the main valve, a. second chamber
beneath the first one adapted to be closed by
ed on said piston, a boring tool carried by said
the auxiliary valve both chambers being provided> cylinder and valve means for reversing the ñow
-with outlet ducts, a rod extending from the body
of the auxiliary valve and adapted to be lifted by
20 the cylinder to open the auxiliary valve after the
of fluid to said cylinder to cause reciprocation
thereof, said valve means comprising a main
valve in the said tubing adapted to control the 20
cylinder has passed a certain way from its lowest - motor and provided with a,v spring. adapted to>
variation of the hydraulic pressure in connection
open and to close the said valve, and an auxiliary
valve in the tubing beneath the main valve, a
with the opening and closing of the-auxiliary
chamber adapted to be closed by the main valve,
position, the main valve being controlled by the
25
valve.
'
‘
8. In an impact boring mechanism actuated by
flushing ñuld the combination of a tubing, a pis
ton mounted thereon, a cylinder slidably mounted
on said piston, a boring tool carried by said cyl
30 inder and valve means for reversing the ñow of
fluid to said cylinder to cause reciprocation there
of, said valve means comprising a main valve in
.the said tubing adapted to control the motor and
provided with a spring adapted to close the said
35 valve, and an auxiliary valve in the tubing be
a second chamber beneath-the ñrst one adapted
to be closed by the auxiliary valve both cham
bers being provided with outlet ducts, a rod ex
tending from the body of the auxiliary valve
and adapted to be lifted by the cylinder to open
the auxiliary valve after the cylinder has passed 30
a certain way fromits lowest position, the main
valve being controlled by the variation of the hy
draulic pressure in connection with the opening
and closing of the auxiliary valve.
THEO SEIFER.
Документ
Категория
Без категории
Просмотров
0
Размер файла
510 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа