INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Mobile crane drawing

RE: Mobile crane drawing

The symbol represents a reservoir or sump, in a more or less standard way.

The incomplete rectangle marked 160l is a nonstandard way to show a reservoir.

They may, or may not, be the same physical reservoir.

The phantom line around the block valve and second reservoir may suggest that 'CE' is some kind of option.

The system appears to be an open center system, where the pump runs continuously at full output, and its flow is diverted to the various functions as they are needed.

The 3 port valve at lower left blocks all mechanisms for transport. I'm not sure how the 'CE' block interacts with that, perhaps to drain the system?




Mike Halloran
Pembroke Pines, FL, USA

RE: Mobile crane drawing

(OP)
Many thanks for the info Mike.
The 3 port valve at lower left block is to select extend/retract of outrigger beams of the mobile crane or for crane use.

RE: Mobile crane drawing

Ah. In that case, the 'CE' block may be what allows retraction of the outriggers, assumed spring loaded.

Mike Halloran
Pembroke Pines, FL, USA

RE: Mobile crane drawing

(OP)
Hi Mike, i figured it out. As you said, the symbol in the CE block is a sump or reservoir. The 160l reservoir and the reservoir in the CE block are physically the same. You were right.
The solenoid valve in the CE block diverts the hydraulic oil to tank when all the DC valves in the valve block are in the middle position. That way the oil does not warm up as a result of continuously passing through the DC valve block.
Many thanks for your help.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close