Hydraulic cylinder for 5 mtr vertical movement 3

[Vish K]

Hi All,
I am new to the group. I have an application where I have to move the load(Personnel handling @ sea)vertically Up & Down and the stroke length is about 5 meters. Controlled gravity drop and hydraulic lift (300kN). I will be using motion control valve for gravity down. What is the best solution? Can someone guide me?

 

[kiwitom235]

you are asking someone to design the system? you need to involve someone with hydraulic experience to design this.

You need to know the load you will be lifting and and what required speed. You need to design the system based on the power required and spec the motor, hydraulic pump, cylinders, valving, etc.

 

[BrianPetersen]

You are lifting 30 tonnes 5 metres, and the load includes people?

This becomes an "elevating device" for which safety standards become applicable, and that means the system has to be designed by someone knowledgeable about the relevant standards. You wouldn't have asked the question that you asked, in the place that you asked it, if that person was you. (It isn't me, either.)

 

[IRstuff]

Not to mention the fact that these sorts of things already exist.

http://www.karliftsolutions.com/products

https://stertil-koni.com/military-lifting-solutions

https://www.pentalift.com/us/lift-tables/customprodinfo-airport-lift.php

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

https://www.youtube.com/watch?v=BKorP55Aqvg

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[chicopee]

Look into the design of hydraulic passenger and freight elevators. Thinking back about a particular freight elevator that used water in lieu of hydraulic oil was located in Holyoke, MA so a little research on the internet could be of value.

 

[PNachtwey]

Not to mention the fact that these sorts of things already exist.

Yes, our elevator at work is hydraulic. The cylinder is not that long.
A cable is attached to the end of the rod and it wraps around a few pulleys.
This way the cylinder can move a short distance and the elevator will move between floors.
Our motion controller could control this but the controls are subject to all sorts of rules and regulations.




Peter Nachtwey
Delta Computer Systems

http://www.deltamotion.com

http://forum.deltamotion.com/

 

[Compositepro]

NAVAL SHIPS’ TECHNICAL MANUAL CHAPTER 588 AIRCRAFT ELEVATORS

https://fas.org/man/dod-101/sys/ship/nstm/588v0r1.pdf

 

[chicopee]

At PNachtwey, your hydraulic elevator design is reminiscent of the water hydraulic elevator that was in Holyoke,Ma back in the 70's except that this elevator used municipal water pressure to make it work.

 

[riverside39]

Natchwey, where can I find more info on control design for elevators and their regulations? I've been wondering how they work and would love to know more. I am not about to design one, rest assured

Thanks!