Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations KootK on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. Alex-1985

    How do I change the boom lift speed at the end of the operation using hydraulic cylinders and motor?

    Thanks for all your replies! It would be nice to have the big picture, but I have never designed such a system until now and I have lack of knowledge because this is a new field for me, and hard to understand all the requirements. Could you recommend YouTube videos, websites, or books where I...
  2. Alex-1985

    How do I change the boom lift speed at the end of the operation using hydraulic cylinders and motor?

    I started thinking about how to slow down the movement of the boom because that could be a solution too. If you look at the problem from the other side, one of the problems may be the boom slowing down when reaching the desired position. Not only at the end of the cylinder stroke but also in...
  3. Alex-1985

    How do I change the boom lift speed at the end of the operation using hydraulic cylinders and motor?

    Thank you! I started reading technical information on PVG 32. And I discovered that there is a special spool in the distributor that allows you to regulate the flow. As far as I understand, changing the flow rate in a small range at constant pressure is possible, for example, with a spool stroke...
  4. Alex-1985

    How do I change the boom lift speed at the end of the operation using hydraulic cylinders and motor?

    Ok, it seems I got through your variant and the idea. Yesterday I found some schemes with the flow control. Yesterday I found some schemes with the flow control. There are now two (possibly three) possible solutions in my head: 1. Use a hydraulic throttle (or proportional valves) with a pump...
  5. Alex-1985

    How do I change the boom lift speed at the end of the operation using hydraulic cylinders and motor?

    Thank you, FluidPowerUserm, for your answer! Sorry for enjoying, but a little bit confused with your example hydraulics scheme. We move proportional valves "A" and "C" to the left and this will be the full flow, but what position must be to reduce the flow?
  6. Alex-1985

    How do I change the boom lift speed at the end of the operation using hydraulic cylinders and motor?

    Thank you for all your replies. Yes, exactly, I am going to use a cylinder with a position measurement system. The problem is the next. I vaguely understood how L-S regulation works. The L-S system tries to maintain a constant pressure differential and it changes the flow to do so. But I need a...
  7. Alex-1985

    How do I change the boom lift speed at the end of the operation using hydraulic cylinders and motor?

    Hello there! I am designing a boom for load pickup, which also has to rotate. And one of the requirements is to reduce the speed of extension and rotation of the boom at the end of the ligting. What I mean by this. For the first 30 seconds, the boom has to lift at a speed of 0.3 m/s, and for the...

Part and Inventory Search