Introduction: Hydraulic Arm

This hydraulic arm was a homework for my daughter's school. The idea was to create a toy from recycled materials. Hope you enjoy.

Video:

Step 1: Materials

- Pieces of cardboard
- 8 syringes
- 1,5 meter hose (aquarium pump)
- 15  Plastic clamps
- 2 screws with 3 washers and 4 nuts
- 1 piece of wire (clothespin)
- 1 wooden stick
- Water, paint, glue, knife, ruler, etc..

Step 2: Planning and Cutting

We made two drawings of what would be the arm and joints. This allowed us to readily quantify the material being used.

After choosing the model that we would use, cut the pieces (not much criterion measurements) as shown in picture.

Step 3: Cutting and Mounting Arm

Step 4: Cutting and Mounting Claw

The gripper is designed to move just one piece. It was more simple.
The "finger" was pasted fixed and mobile was seated on a shaft made with a piece of wooden stick that had a piece of cardboard cut in a circle glued on top so as not to leave the place.

Step 5: Cutting and Mounting Base

The base was made from two pieces of cardboard in order to support arm and accommodate syringes in the same set.

The movable part has two holes:

- One in the center (to be able to rotate the base)

- The other end (to link the syringe and allow movement)

The syringe was attached to another piece of cardboard to keep the same level of mobile base.

After verifying the limits of movement, we fix the syringe with the clamps.

Step 6: Putting It All Together

Aftercreatedthearm,clawand basepiecestogetherto testoutthe movements andcheck if everything isworking properly.Onceassembled, we found thatthe syringeclampwas notwell positioned.We cuta piece of cardboardto attach thesyringeto another position,as shown in figure.

Step 7: Painting

After completing the check and corrected minor errors, disassembled the arm as far as giving and paint. After the paint dries, put together definitely.

Step 8: Filling the Syringe

We chose four colors to color the water and fill the syringes.
Fill the hose and then put a syringe (without air inside - close) on one end. Fill another syringe (not filling all) and put the other end. Check the operation.

Step 9: Final Result

I hope you enjoyed.

Comments

author
ToggleSwitch (author)2014-06-28

I favorited this as soon as I saw it. I really love the idea, and the vibrant colors! Thank you for the time you spent making this instructable, I really enjoyed it and was educated in hydraulics through it.

author
PeckLauros (author)ToggleSwitch2014-06-29

Thanks!

author
JiggleW (author)2016-11-11

cool is it okay if I use this for my science fair project

author
PeckLauros (author)JiggleW2016-11-12

No problem! No problem. I suggest reinforcing the claw arms with popsicle sticks, for example.

author
spiritclaw102 (author)2016-02-18

Cool, mine turned out perfect! Thanks for showing me and some others a good step-by step process into making this. I plan to take a picture of it and post it on here as well.

author
PeckLauros (author)spiritclaw1022016-02-27

Thank you for enjoying the work . Here at Instructables have many good works . As soon as I can, I come back to post more .

author
spiritclaw102 (author)2016-02-09

Wow, that's a lot of work you put into this project! It really fascinated me, so I will be looking at more of your projects!! Thanks for publishing it :D

author
ramdasshirke (author)2016-01-27

IT WAS NICE !!!!

author
jOker58 (author)2015-08-12

I made something just like this there really awsome

author
PeckLauros (author)jOker582015-08-16

Show us yours!

author
jOker58 (author)PeckLauros2015-08-17

this is mine yours is more advanced

image.jpg
author
PeckLauros (author)jOker582015-08-20

Nice idea!

author
jOker58 (author)PeckLauros2015-08-16

ok I will send it tommow

author
PeckLauros (author)jOker582015-08-12

Nice! :)

author
mr_robotics_ 1471 (author)2015-06-26

author
Pixelman made it! (author)2015-06-18

I made a hydraulic crane with detachable parts and a bucket using all but popsicle sticks, cotton swabs,cardboard and hot glue ;that costed me around $2 and works quite good, tell me if you guys would like me to make a tutorial!!

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author
GraydonT (author)2015-05-30

i had something like this before. then i broke it with over pressurizing it.

so i might build this. becuses it doesnt need to be pumped up.

author
PeckLauros (author)GraydonT2015-06-01

:)

author
moosaahmed (author)2014-10-27

plese give us measurements

author
PeckLauros (author)moosaahmed2014-10-31

Hello . Unfortunately this is an old project and I missed the measures . Will depend on the size of syringes you buy.

author
moosaahmed (author)2014-10-26

what can it pick up in particular cause I have to do it in school

author
PeckLauros (author)moosaahmed2014-10-26

Some plush toys and some origami . The claw is not very strong . It was meant only to showcase the work of pistons in a didactic way .

author
moosaahmed (author)2014-10-26

can the claw pick up a chalk board duster

author
PeckLauros (author)moosaahmed2014-10-26

With a feel changes in design,i guess :)

author
kshitizc (author)2014-09-23

Thanks For Your Help. It will surely help me.

author
PeckLauros (author)kshitizc2014-09-27

No problem! Then Show us your arm.

author
jamie.parr.18 (author)2014-09-21

where did you buy the syringes?

author
PeckLauros (author)jamie.parr.182014-09-21

I bought at a pharmacy.

author
akshaygill (author)2014-09-03

this is awesome.. I really loved it

author
PeckLauros (author)akshaygill2014-09-07

:)

author
ToggleSwitch (author)2014-07-02

I do not need the demensions to each part but just out of curiosity, (hope I don't get killed like the cat), what is the size of the whole project put together? I don't even need exact numbers an estimation would even be fine.

author
Dullz (author)2014-04-07

Made a few changes but got the main idea from you, thanks! ;)

author
PeckLauros (author)Dullz2014-04-08

Nice!

author
Dullz (author)2014-04-07

Wow thanks a lot, this design was AWESOME. Look at my profile picture, I'm finally finished with it.

author
Dullz (author)2014-04-06

Busy making it and it's really FUN!!!

author
PeckLauros (author)Dullz2014-04-06

Also enjoyed myself.

author
gholam (author)2014-04-05

nice design

author
PeckLauros (author)gholam2014-04-05

Thanks!

author
Dullz (author)2014-04-05

Awesome

author
PeckLauros (author)Dullz2014-04-05

Thanks!

author
Danny roxxx (author)2014-02-11

As simple as you and your brains rock

author
hashwanth (author)2013-10-27

i want the measurements of everything !!! please

author
PeckLauros (author)hashwanth2013-10-28

Hi! If I find the claw, I will put measures.

author
K S VigNesh (author)2013-06-29

wow extraordinary

author
PeckLauros (author)K S VigNesh2013-07-02

Thanks!

author
K S VigNesh (author)2013-06-29

wow

author
3366carlos (author)2013-06-13

5 jalapenos!!

author
PeckLauros (author)3366carlos2013-06-13

Obrigado!

author
vkz.soni (author)2013-05-17

plz can i know the size of the syringes used

author
PeckLauros (author)vkz.soni2013-05-18

Hi Sorry for the delay in responding. In this project, I used 3ml syringes. I do not know the size because I'm not home. As soon as I can, will check the size of them. Although size does not matter much. It depends on the size you'll want to build your mechanical arm.

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