Hi, I'm Teacher REYNER, thanks for watching our videos and sharing it with your friends on your social networks.
Today we are going to start the episodes of the electro hydraulic assemblies we hope they are
great help everyone, to start it is easy it is simple because many
what we are doing right now is replacing the hydraulic control with
control l then the electrical control in the
pneumatic part in many cases is the same control in the hydraulic part in
some cases
then we start as the simplest is easier is we are going to act a
single-acting cylinder so let's go to have two schemes what is the
strength scheme and what is the scheme control or command in this in this
part we are going to do the command direct command live because they are
simple then the strength part we have the single acting cylinder a
throttle valve to one-way we have a valve 42 the stable monkey
here the pressure regulating valve our valve is all this part
hydraulics we have seen him now in the part of control we can be command
direct in this case a button the select today from in the case of command
indirect one button one auxiliary relay of the relay and the selene today from the
solenoid valve all this is all this diagram we explain in the fixing of
done I invite you to see the tutorials on the twizy
now on the physical side
hydraulics manhole
more or less like that there more or less we come from mom
going up here we have the valve distributor the regulating valve
pressure and here we have the tank return which is nothing but the state but
let's connect then this is the return to the tank that we are going to
connect that is the hydraulic part that now
we drive returned to tania and we already have the return
to now as well explained we are going to replace the control part
hydraulic on the part we are now going to control the schemes the control is going to
being this workshop confuses me floor of up the control part was fine
hydraulic by control part electric then now we are not going to
use hydraulic control valve but we are going to use electro hydraulic
therefore for this scheme we are going to use a 4 2
a valve 42 that is mono stable because it only has an electric pilot
only receives a signal from hydraulic to the left side then
let's make the connection first we should use a 32 valve but
as I don't have in our existence in our laboratory I will do the
explanation with this valve It should be noted that I do not have it
then I will make the explanation with this perfect valve
if we come here Yes now
pressure let's take a line of pressure and bring it to the point of
stable mono valve in this case at point p
the point was depression then there where are we going to connect
now of departure from the output to we will make the connection
and we will go straight
knowing simple effect this one we have here we come here and this
is the part of force the force scheme now the
control part I'm not going to manipulate here but I'm going to
with an electrical panels therefore
we will use the font a button and relays
we came and analyzed the first part we will need the first part just the same
that electro pneumatic
and we closed circuit in control we we are working with direct current
this source provides us direct current
and 24 volts in control example we work with low voltage in current
direct then as the scheme doesn't send the line of work of the scheme
direct let's say the direct scheme sends us to make a button
normally open and then to cel in today from the solenoid physically
how are we going to do then we are going to use this button to turn on and here
we have the button here we have the second of the solenoid then
let's make that connection energize mos in the case of the buttons has
this these auxiliary contacts associated with
this button that's why the line marks we will always enter your point of
common connection with cech in the case of this we have here these panels
come designed that way
and later we will leave the normally open contact which is 14
let's come to the solenoid valve so we live here
we come straight to the solenoid valve then we make this connection as
source here now
now we are going to close the circuit the other connection of the solenoid valve and
we close at 0 volts 0 and there we have the two schemes now we are going to make
a little simulation
well then right now we are going to do the try here we should light both
systems separately first part hydraulic and then the electrical part
we already have the part we have an electrical part
and we also have the part of the part hydraulics in what I experiencing
are the pressures
so here in our scheme we are noting that the valve does not
we have installed what is the return to Whether that were to happen then
there could be an accident then I will bridge here I will put
an ate would be seen in the shot I will put a t here
to later make the bridge
and connect here they are
let's put our way I don't know see
do not notice a hose break
so they don't see a break in the hose
and we have verified both systems both the hydraulic as the electric in this
case we know that both systems are must complement in the diagram
force with the control diagram and it's important that we have all the
full connections so there are no system failures
the one who will surely perform the valve in this case it's an electro
hydraulic valves 42 because I don't have what happen
and I still need to mount it no it matters which way out it has been plotted
is this valve biden and directing they must cut it down I am going to install it
so for them
let's go down we didn't know we hadn't installed
take a shot that you see there the symbol you get close you look at the symbol you see
which is a one-way valve flow because the music is already
no need that we restart all systems both in the back
and now we are going to do a simulation
for sure
to become generalized solenoid valve 42 and change exercise switch to oil
hydraulic around here the force will win the spring pressure force is going to
beat the oil and they will move positively that is to say they are going to start
clockwise when you remove the signal the spring will gain pressure
of our 300 of this one to evacuate by the imposing linked and the oil of no
is going to evacuate the rector quite a bit and the plunger be a displace negatively or
be it will retract failure of that we will see now if we see the pulse out
I must press return in its position initial we press thinkable stopped
eject return your starting position
if we take a close shot how can we see every time I press it energizes and
there we see the red light no we have the red light
and you can also hear the change in it position change from electro to
now let's see here he leaves in a near coma to
to be seen when the square angle
It is a filter that has to evacuate the air that is recovering next
straight
but when the plunger enters air into that residence and must be evacuated for some
side looks like that filter
well the bonaparte let's do the command assembly in
direct then in the force part it is the same what is changing now
is the command live here in the command direct because we don't have relays
neither coil and the indirect case we are going to use a relay here one is the
only difference we will make then this situation here
are no longer valid but we are going to use the coil each
after this after the coil a data more than coil and coil
return to zero volcker
here make a hit
here we both need to put the lines going to zero votes then
let's put this here so that we it works
for it to work
as a second point what we are going now is use a relay auxiliary every
one to energize the selenium coil
therefore we use this we saved the 14 coil this
relay we came to ence I give you the letter under
is the only difference now let's do a test and we'll see what works
same
control now we make a relay out
an auxiliary of each one is that he sends me to change position to the electro and
we do that and there it is working from the same way if I pulse in salt I stop
press the return to your chair click on you leave stop water listen in returns
initial now the moment of control the part
electrical
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