Hydraulic Crane | Design Squad


Hi, I’m Deysi,
from Design Squad Global. Check out this hydraulic system
that I made. It uses the pressure of water
to do work. When I push one side down, the pressure of the water
makes this side go up. Hydraulic systems
are very helpful because they can make work
easier by spreading the force–
the push or the pull– over a distance. The brakes on a car are a really common use
of hydraulics. Pushing a brake pedal
applies a force to the brake pads, which grip the brake discs
and makes the car stop. I’m going to show you the materials you’re going
to need to make a hydraulic system. Then you can build your own and use it to solve a problem
you come up with. So first, you’re going to need
some plastic syringes. They’re pretty cheap
and easy to find at a store or online, and you can have an adult
help you find them. You’ll also need
some plastic tubes. This is important. They have to fit around the tip
of the syringe. You can get tubes like this
at a hardware store. Bring your syringes with you
to the store to make sure that the tubes fit
tightly on the tip. Now, here’s how you make
a hydraulic system. I’m going to be using a drill
and some hot glue, so it’s time to put on
some safety glasses. Attach one syringe to the tube and fill the tube with water
to the tippity-top. Then attach the other syringe
to the other side of the tube. When I push the plunger, the water is pushed
through the hose, creating pressure. Now I’m going to build a crane
with a hydraulic system. I am hot-gluing
some craft sticks together. Hot glue can be very hot,
so if you’re going to use some, make sure you have an adult
help you. Now I’m going to take two
of my sandwiched craft sticks and put those together, and make this the base
of my crane. Now, if you’re going to be using
a drill, make sure you get an adult
to help you. Well, this doesn’t look
like it’s going anywhere, but just in case,
I will also glue it. Okay, so this is going to be
the upright part of my base, and I will be drilling a hole
through here. It will be my pivot point. And now I’m going to be using
yellow zip ties. These are the smallest ones
that I have. See? This is where it pivots. So we want to make sure
that it has free rotation here. I love zip ties. If you like zip ties,
I like you. Okay, I want to make sure
that it still moves freely. Perfect. So I’m, now I’m going
to snip off this end so it doesn’t get in the way. I will be drilling some holes
into my plunger so that I can attach it
to my crane. And there you have it,
four tiny holes. This is the plunger
to my syringe, and now I’m going to attach it
to my crane arm. Grab some water. I think it’s going to work. And it goes up! And it goes down! It works! Woo-hoo! ♪ My crane works, my crane
works, my crane works! ♪ I’m building an extension
on my crane’s arm. That way, I can lift a load. I’m kind of building
a tiny little forklift. It’s going to be lifting
a load of money. Let’s test it out. Perfect. Okay. I’m going to bring my little bag
of money. I have 20 pennies in here. Let’s see if my crane
will lift them up. And drop it down. This bag has 20 pennies. Try and build a crane
that can lift even more. See what you can build
with a hydraulic system. Could you design something that can help open a door
or a drawer for someone who is
in a wheelchair? How about something that can
be pushed by your foot instead of your hand? If you decide to build a crane,
show us how strong it is. Whatever kind of hydraulic
device you decide to build, send your designs to the Design Squad Global
website.

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