Structural dimensions of shoulder bolts (relaxation lugs)
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Friends who do design often come across the design of clamped tube sheets, and the most troublesome thing is not knowing how to size the shoulder bolts. I would like to share the structural dimensions with you so that you can use them at your convenience. (Picture reply visible) :)
This post was last edited by SDHZZXM at 2017-11-8 11:32. Check out your recommendations.
In fact, many people hate my "reply visible" setting. However, there are several advantages to setting this up: First of all, avoid reaching out to the party, often unable to speak. ； Secondly, it is just a small thing to share. It will only be helpful to new designers. It is dispensable for veterans. ； Third, it can support the development of the forum. If you are a non-member, you must register for Haichuan. This can be regarded as making a small contribution. ； In the end, I upvoted my own post (if I get more than 12 replies in a day, wouldn’t I be able to get 1 charm, hahaha)
I took a look and I don’t know where the poster got the screenshot. There is no anti-loosening lug structure, and why is H smaller than the diameter of the stud bolt?
I understand, I will reply again. Please explain the problem on the 4th floor...
Very useful information, please give me a small thumbs up on the rating. :lol
The screenshot is from the 2004 edition of the "Chemical Equipment Design Manual", which is considered an older reference book. When you say H is smaller than the diameter, this probably uses the B-type structure in NB/T 47027, so H is smaller than the thread diameter, but larger than the polished rod part.
Haha, thank you for the tip. thanks thanks
But it also breeds all kinds of watering. I click in again and again, only to find that it is water, which is a waste of time.
The cost of this structure is high enough. The tube plate forging requires dozens of mm more outer diameter, just for two or four holes.