Scissor Lift

Hi everyone,
I have a question regarding a scissor lift with a platform on the top. Do you need a linear slide at the top of the lift like the one at the bottom? I am referring to this type of scissor lift. https://www.youtube.com/watch?v=9nujo9A-GUw . Thanks!

Yes.

Wrong.

I’m not sure if I entirely understand your question correctly, but I would say the answer is no.

As far as I’m concerned, there’s only one “type” of scissor lift, and it doesn’t require any linear slides.

…No im pretty sure u need one in order to have something mounted on the top and kept flat the whole time…

A slider at the top is not required to build a proper scissor lift. However, in this specific video, the robots with the scissor lifts have linear sliders at the top attached to the 5 hole C-Channels. I’m almost certain that they have the sliders at the top to keep their cone intake and the 4 bar flat and have it parallel to the ground.

Thank you for your help everyone!

I suggest you look at 185 As lift from last year.

I am very curious what you are envisioning. Can you be more specific?

Have u built a scissor lift before? U dont need sliders at the top. Absolutely unnecessary and it adds unneeded weight. Just simply use nylocks to allow the top to stay parallel at all times. Ez.
Edit: Ur link is broken.

Im sorry, but I want to build a scissor lift like this one and in order to allow the base at the top to remain parallel, I believe the top platform needs a linear slide (so the lift can move up and down). But, I have never built a scissor lift and I may be incorrect. Could you elaborate on your nylocks design? Thanks!

Hi guys, after reading this post, I’m a tad bit confused as to what a scissor lift is…

How can one build a scissor lift while keeping it linear? It seems like an odd idea to me.

I’m pretty sure the one attached below is a scissor lift, amirite? Due to the scissor like mechanism?

Screen Shot 2017-10-12 at 10.23.40 PM.jpg

If not, then this might be it, since it is also linear like a scissor lift is supposed to be:

IMG_6314.PNG.jpg

Haha sorry just had to put that out there.

Sorry, but I seem to be failing to understand how a scissor lift could work without a linear slide. As far as I understand, the scissor lift is a linear lift that stays linear due to its use of a pantograph. We can all agree that in a pantograph, a change in one parallelogram would result in a simultaneous and identical change to all others. How could a scissor lift go up, if the bottom or top parallelograms are restricted in movement?

Could anyone elaborate on their thought process? Thanks!

There are many ways to power up a scissor lift.

Eg.

  1. linear slides
  2. rack and pinion
  3. gears at the centre of the x-bar (my personal preference)

Scissor lift was THE lift to use… before the NZ teams popularised 6-bar during the end of Gateway season.
(A bit of Vex history - during gateway, we actually called 6-bar robots as NZ-bots)

So if you want to have a good look at how or the different ways of powering a scissor lift, you can try looking at videos of gateway (or before)… especially those from china.

There were also some good teams using scissor lift during skyrise too - eg. T-vex and 7682.

Maybe you should just make a DR4B…

Scissor lift was THE lift to use… before the NZ teams popularised 6-bar during the end of Gateway season.
(A bit of Vex history - during gateway, we actually called 6-bar robots as NZ-bots)

So if you want to have a good look at how or the different ways of powering a scissor lift, you can try looking at videos of gateway (or before)… especially those from china.

There were also some good teams using scissor lift during skyrise too - eg. T-vex and 7682.

Thank you! I will take a look at gateway, I have actually been looking at skyrise. I didnt know that scissors lifts were used in that year.

Haha. Too late, we already finished the lift and chassis…

Aww come on you could if you put your heart to it <3