Mechanical Design, Manufacturing and Engineering Forum
[ Home ] [ Search ] [ Engineering and Design Database ] [ Resume/Job Database ] [ Product and Services Directory ]
[
Engineering, Design and Drafting Store ] [ Engineering Forum ] [ DFM DFA Training and Trainers ] [ GD&T Training GD&T Trainers ] [ Advertise ]
[ POSTING POLICY / RULES ][ Archive#1 ] [ Archive #2 ] [ Archive #3] [ Calculators ] [ Tell A Friend ]
Forum Moderators: randykimball, Administrator

how to manipulate stroke of cylinder Question
Post Reply   Forum
Posted by: ridasm

04/18/2005, 00:51:22

Author Profile Mail author Edit
Hi..

I have a problem to manipulate sroke a cylinder. I'm design a lifter 4m high but I only have 1m cylinder..

If somebody have a information about the mechanism which is could manipulate the cilinder stroke from 1 meter to 4 meter with a gear or rope system, please inform me...

Thanks...

RD







Post Reply | Recommend | Alert View All   | |

Replies to this message


Re: how to manipulate stroke of cylinder
Re: how to manipulate stroke of cylinder -- ridasm Post Reply Top of thread Forum
Posted by: Negative

04/18/2005, 10:27:17

Author Profile Mail author Edit
It can be done with a pulley and rope/chain system. Draw out the following steps on paper starting left; Attach a pulley to ground, attach a cilinder with its bottom to ground at the same height as the pulley, let the pistonrod point down, attach a pulley to the piston rod, attach a rope to ground at the same height as the first pulley, guide the rope past the pulley on the pistonrod the guide it past the pulley fixed to ground and let it hang down and attach lifting bucket to it. This mechanism doubles your stroke from 1 m to 2 m, adding more pulleys increases the length further.






Post Reply | Recommend | Alert Where am I? Original Top of thread
Re: how to manipulate stroke of cylinder
Re: how to manipulate stroke of cylinder -- ridasm Post Reply Top of thread Forum
Posted by: maytag

04/18/2005, 09:11:14

Author Profile Mail author Edit
Sounds like you need a scissor type lift or buy a 4 mtr stroke cylinder. Maytag






Post Reply | Recommend | Alert Where am I? Original Top of thread | |
Re: how to manipulate stroke of cylinder
Re: Re: how to manipulate stroke of cylinder -- maytag Post Reply Top of thread Forum
Posted by: raghudon

04/20/2005, 13:17:42

Author Profile Mail author Edit
Use a scissor Lift. Its the most elegant way to do this job, in fact depending on the load, even a 650mm cylinder stroke can be used for a lift of 4 m using a 2 stage lift. Otherwise, look at how forklifts are assembled. Use 5 sections, each of 1m height. then couple them using ropes and pulleys such that the attachment sequence is
#1bottom (fix)-#2top (pulley) - #3 (fix)
#2bottom (fix)-#3top (pulley) - #4 (fix)
#3bottom (fix)-#4top (pulley) - #5 (fix)
Then fix the cylinder on the base and the top end of the cylinder on the top of #2 This will solve your problem






Post Reply | Recommend | Alert Where am I? Original Top of thread

Powered by Engineers Edge

© Copyright 2000 - 2018, by Engineers Edge, LLC All rights reserved.  Disclaimer