×
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!
  • Students Click Here

*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.

Students Click Here

Jobs

Hoist Block Spring Interact with Limit Switch

Hoist Block Spring Interact with Limit Switch

Hoist Block Spring Interact with Limit Switch

(OP)
My company has purchased a trolley w/ 5t hoist and we've come to find out we need to raise the load an additional 6 inches.  Raising the hoist/trolley assembly is not an option.

It has been suggested by our craning guys, just remove the 6 inch free length spring that encapsulates the chain just above the hook block.

Normally this spring would contact a lever arm that actuates a plunger type limit switch for upper travel.

How would the removal of this spring affect operation of the hoist?  The spring is fairly stiff so I don't see it providing any critical dampening affect on the switch or the load.  Any help would be appreciated.

Frank "Grimey" Grimes

RE: Hoist Block Spring Interact with Limit Switch

If you remove the spring it will lock itself and you will have to reset the contactor inside. It will happen every time you use the hoist, all the way to the top.

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