Pin irreversible lock
ฝัง
- เผยแพร่เมื่อ 27 ก.ย. 2024
- Input: yellow handle.
Output: blue shaft.
Two orange pins are fixed to the handle.
Two green studs are fixed to a hub fixed to the shaft.
The studs are inserted into holes on the handle. The hole diameters are a bit larger than the ones of the studs.
Violet pins are placed in the wedge-shaped space between the blue hub and the outer stationary disk (in glass). Red spring maintains permanent contact of the violet pins with them.
When the handle turns clockwise (yellow arrow), the left orange pin pushes the left violet pin, prevents its wedge action and the handle makes the blue shaft turn clockwise thanks to the green studs.
When the handle turns counter-clockwise (green arrow), the right orange pin pushes the right violet pin, prevents its wedge action and the handle makes the blue shaft turn counter-clockwise thanks to the green studs.
When an unintended clockwise torque (red arrow) is applied to the blue shaft, the shaft can not rotate because of the wedge action of the left violet pin.
When an unintended counter-clockwise torque (pink arrow) is applied to the blue shaft, the shaft can not rotate because of the wedge action of the right violet pin.
In brief, the rotation can be transmitted from the yellow handle to the blue shaft.
The transmission in reverse direction (from the blue shaft to the handle) is impossible.
In other words, it is possible to adjust angular position of the blue shaft by turning the yellow handle. The adjusted position is kept unchanged regardless of any torque applied to the blue shaft.
The video shows case of manually operated valve in pipe.
For more refer to:
www.interempre...
This mechanism and the one shown at
• Ratchet irreversible lock
have the similar working principles.
STEP files of this video:
www.mediafire.c...
Inventor files:
www.mediafire.c...
I am struggling to understand how the orange pins would be inserted in the blue hub, wouldn't the glass outer disk prevent them to be inserted as the glass disc is inserted before the handle and has only 2 holes to allow the 2 green studs to connect with the handle, how are the orange pins getting to the blue hub surface while the glass disc has only 2 holes
I am little dumb.i red your description still unclear about the concept
Do you have a STEP file of this model? I can't seem to wrap my head around it.
STEP files of this video:
www.mediafire.com/file/73rabqimgl9tara/PinIrreversibleLockSTEP.zip
Thank you very much!
I wanted to ask for your files a long time ago, but as far as your effort is concerned, I thought it would not be right to do this. But as you made it available to our colleague, I would ask some in the future. Your channel helps me a lot. Thank you.
its more like unidirectional lock. The blue shaft can only be spin by yellow handle.
sir...i want this softwear for making some physicle instruments for experiments.
It is Autodesk Inventor.
Is the red spring what jams the spindle? I can't see clearly from this angle
The red spring is placed between two violet pins and tends to push them apart from each other.
is there a backlach when the yellow handle reverse the direction of rotation?
The backlash is inconsiderable because the rollers are always in contact with other parts thanks to the springs.
May i know, where those violet pins are fixed, can you please show cross section of this.
The violets pins are not fixed to anywhere.
They are placed between the blue part and the white ring like the orange pins in following video
th-cam.com/video/H4SiM5Dcblg/w-d-xo.html
From which book you are executive all these concepts
My videos are built up based on following sources:
- Textbooks
- The Internet
- Requests from TH-cam viewers
- What I saw in practice or I imagined.
My favorite books:
1. С. Н. Кожевников и другие, Механизмы, Москва, 1965, 1060
стр.
2. I. Artobolevski, Mechanisms in modern technic, Moscow
1977, 7 vol.
3. Sclater & Chironis, Mechanisms And Mechanical Devices
Sourcebook, 2001, 485 p.
4. Henry T. Brown, 507 Mechanical Movements, New York
1908,122 p.
5. А. Ф. Крайнев, Словарь Справочник по Механизмам, Москва, 1987, 561 стр.
Would you have any of these books in English in PDF format?
Please look for them on the Internet.
I have downloaded them but I don't save their links.
I found a site: 507movements.com