Difference between revisions of "Talk:Workshop Crane powered by drill"
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The pivoting arm, in its lowest position, is still functional?<br> | The pivoting arm, in its lowest position, is still functional?<br> | ||
[[File:Oseg wc img14.jpg|thumb]] | [[File:Oseg wc img14.jpg|thumb]] | ||
===Re: Part number 2 -- [[User:Aquilesmorillo|Aquilesmorillo]] ([[User talk:Aquilesmorillo|talk]]) 03:25, 8 April 2021 (CEST)=== | |||
: I would need to do more simulations, but it is best to run tests on a real model. | |||
== Part number 3 -- [[User:Inddigital|Inddigital]] ([[User talk:Inddigital|talk]]) 17:39, 16 December 2020 (CET) == | == Part number 3 -- [[User:Inddigital|Inddigital]] ([[User talk:Inddigital|talk]]) 17:39, 16 December 2020 (CET) == |
Revision as of 03:25, 8 April 2021
-- Inddigital (talk) 14:26, 15 December 2020 (CET)
Excellent project, very good analysis, just a comment
In the main frame, you can use three levels of hierarchy, for the numbering of the parts since it is an assembly with some complexity
Re: -- Aquilesmorillo (talk) 23:18, 15 December 2020 (CET)
- Thank you, I will keep this in mind for improved versions of the equipment.
Part number 1.18 -- Inddigital (talk) 23:43, 15 December 2020 (CET)
Will a 10 mm cable be sufficient to carry a 200 kg load?
Re: Part number 1.18 -- Aquilesmorillo (talk) 23:54, 15 December 2020 (CET)
Sure, you can use this table as a guide:
D [inch] | D [mm] | Safe Load [kN] |
---|---|---|
1/4 | 6.4 | 4.89 |
5/16 | 8 | 7.56 |
3/8 | 9.5 | 10.9 |
716 | 11.5 | 14.7 |
1/2 | 13 | 19.0 |
9/16 | 14.5 | 24.0 |
5/8 | 16 | 29.7 |
3/4 | 19 | 42.3 |
7/8 | 22 | 57.4 |
1 | 26 | 74.3 |
For 3/8" [9.5 mm], we have a safe load of 10.9 kN [1111 kg]
Table from: https://www.engineeringtoolbox.com/wire-rope-strength-d_1518.html
Re: Re: Part number 1.18 -- Inddigital (talk) 00:03, 16 December 2020 (CET)
Good ♠
-- Inddigital (talk) 03:03, 16 December 2020 (CET)
How is the mechanical behavior in extreme cases, such as impacts?
Re: -- Aquilesmorillo (talk) 03:05, 16 December 2020 (CET)
- A simulation was made as an example, which shows the mechanical behavior to a vertical impact load caused by a slope, obtaining satisfactory results, you can see it in Technical Documentation.
Part number 1 -- Inddigital (talk) 03:33, 16 December 2020 (CET)
You used a program to compare the height of this frame with the height of a person, where can I get that program, is it Open Source?
Re: Part number 1 -- Aquilesmorillo (talk) 03:38, 16 December 2020 (CET)
- That program is fSpy, (Open source still image camera matching), it was used as part of the reverse engineering process. You can find it at:
Part number 1.18 -- Aquilesmorillo (talk) 03:51, 16 December 2020 (CET)
According to the information gathered from the video, it is preferable to use a metal pulley
https://www.savacable.com/pulleys-design-information
Part number 1.19 -- Inddigital (talk) 16:43, 16 December 2020 (CET)
Do you have a reference gearbox in the current market?
Re: Part number 1.19 -- Aquilesmorillo (talk) 16:55, 16 December 2020 (CET)
- It is important to select a gearbox with a high ratio like the one used here of 1:100 and with the required safety to prevent the load from being returned. Here is a reference, that supplier offers reducers with auto-blocking system (99 series) and with the required ratio:
http://www.bj-gear.com/en/products/standard-solutions/gearboxes/worm-gearboxes/
Part number 1.10 -- Aquilesmorillo (talk) 17:15, 16 December 2020 (CET)
The purpose of these pieces is to place the wheels, which I think can be omitted, by placing these wheels directly on the structure
Part number 1.11 -- Aquilesmorillo (talk) 17:30, 16 December 2020 (CET)
This piece is a plate subjected to pure traction, which works as a tensioner, under this condition, can support more than 2000 kg
Part number 2 -- Inddigital (talk) 17:36, 16 December 2020 (CET)
The pivoting arm, in its lowest position, is still functional?
Re: Part number 2 -- Aquilesmorillo (talk) 03:25, 8 April 2021 (CEST)
- I would need to do more simulations, but it is best to run tests on a real model.
Part number 3 -- Inddigital (talk) 17:39, 16 December 2020 (CET)
Does the structure remain stable in the case of maximum extension of the telescopic tube?
Part number 5.3 -- Aquilesmorillo (talk) 17:54, 16 December 2020 (CET)
I'm not sure if plastic wheels can withstand heavy use in a durable way, here I leave a reference to some models that support the load
https://www.urbaboxx.co.uk/freestanding-shelving-c1/chrome-wire-shelving-c2/heavy-duty-castor-wheels-for-chrome-shelving-units-100-mm-wheels-with-m8-thread-set-of-4-p599
Part number 4 -- Inddigital (talk) 18:35, 16 December 2020 (CET)
This piece, where the leg is anchored, contains machining that can affect its mechanical strength, by stress concentrators, I recommend a separate analysis, considering its geometry
Re: Part number 4 -- Aquilesmorillo (talk) 18:38, 16 December 2020 (CET)
- Thank you for your observation, that is correct, a separate stress analysis is required in that piece, no longer by frame analysis but by finite elements
Part number 1.21 -- Inddigital (talk) 18:50, 16 December 2020 (CET)
This item can be developed as a production part
Re: Part number 1.21 -- Aquilesmorillo (talk) 03:24, 8 April 2021 (CEST)
- I think the same, an improvement of the equipment should be made with these changes.
Part number 6 -- Inddigital (talk) 19:17, 23 December 2020 (CET)
This piece can have an intermediate guide to align the charging cable...