jib crane hoist swing boom planning and constructive advice

[babolottino]

for personal convenience of my garage garage. I would like to build a small jib crane with a revolving arm. of course a modest structure under hook height three meters arm length three meters brought five hundred kilograms to be bolted to a large concrete column of the building and to the floor. you have realization ideas' want to realize it in iron beams and bolts. some suggestions thanks for your attention

:confuso:

https://youtu.be/ZJ9Up5sQzxU

 

[john_reese]

That is a pretty standard design for a wall hung jib. The biggest questions are whether the wall or column can tolerate the horizontal forces generated and whether the fasteners used to attach the jib are adequately rated. You may want to have a structural engineer look at this.

 

[MRA]

I'd take the vertical right to the floor (as in first picture), which lessens the prying moment on the top rawl bolts / shield anchors. At the top of the wall there won't be much weight holding the blocks together, and you could pull the wall apart. I've cheated in the past using a lightweight structure for everyday lifting, and then propping the end of the jib on those occasions where I want to lift something heavy (obviously no swinging around then with a load in the air). Even a wooden prop (4" fence post) will take a big moment off that top fastening.

(And - I imagine it's obvious - but keep your loads as close to the ground as you can at all times, and when they do need to go up high, don't have anyone (incl you) underneath!)

 

[babolottino]

thanks for your advice, I would like to build a structure of H beams the reinforced concrete pillar is 5 meters high, cross section 60 x 60 cm, I would like to build a jib swing crane at least 3 meters long under hook 3 meters reach at least 600 kg, at the extreme I would like to hook a stay with a diagonal rod to form a right-angled triangle, you would have pictures or drawings or else with measures of the sections of the profiles thanks sorry if I take advantage of your patience

 

[john_reese]

Unless you know how the column is constructed and are capable of evaluating its strength, and the effects of the loads you will be applying, find a professional to do the evaluation.

 

[DJP]

Or you can build it, load it to 3 times the max load and see if it breaks. That would be fun.

 

[babolottino]

the reinforced concrete pillar is tall, 5 meters vertical height 55 x 55 cm square section, I do not have to load tons of cargo, I put a nominal weight of 600 kg, but in reality I do not think I will ever raise more than 300 kg, therefore it would be loaded in excess, I realize that the boom behaves like a cantilevered shelf bending to bending and cutting in the hinge that would be a constraining constraint like balcony lug I'm wrong? what do you say you would have pictures to take constructive inspiration or design with measures and section profiled to use, thanks for your attention

 

[charlesfitton]

...or you could make an A-Frame to put under the boom when the loads are on the big side..

 

[miglincit]

ad babolottino:

as John said:

Unless you know how the column is constructed and are capable of evaluating its strength, and the effects of the loads you will be applying, find a professional to do the evaluation.

If you do not understand how the forces and torques are applied to the different mounting points and to the joints of your construction get a professional. This is not something you just copy&paste from somewhere else.

E.g. the maximum load applied influences the size of the beam, whose dimension adds to the load... And if you also want to swing the arm, the mounting pins and joints will be stressed in different directions, as will be the concrete column (the dimension of the column is in no way usable to determine the applicable strength - there is too much variety in the material and embedded steel).

Thomas

 

[ddmckee54]

Not to be a legal or a safety weenie, but if you don't get some professional help in designing this thing you really need to consider your liability when building it. Right now YOU may be the only one using this, but will that ALWAYS be the case? What about if/when you move? If you leave this thing behind intact and somebody else uses it then gets hurt, you or your family would most likely be held liable for the injuries and or damages. Is it worth risking your/their future to save a couple of bucks now?

Don

 

[DJP]

This fixed crane will have limited swing and hence flexibility. Perhaps the OP should reconsider and look at an engine hoist that is on wheels and can have multiple uses in a shop.

I am assuming that the requirement is to move bigger lathe chucks or to place heavy work pieces on a mill.

The design as proposed is much too limited, in my opinion.

 

[Barnbikes]

I second the engine hoist idea. Most are 1 ton capacity. You will not believe how many ways you will find uses for it.

 

[babolottino]

I ordered the material I think will arrive next week, however, I will attach photos of work for further corrections thanks for your intervention sorry if I stole precious time, however this device will use only me once built I will not install it in a public place but in my garage in the countryside that I am editing in the workshop and personal carpentry if you had photo drawings or participated suggestions, sorry again and thanks for the valuable suggestions

 

[Buchanan]

If you are building a hoist to your own design , and not using a qualified engineer, then, when it is finished attach the greatest load you are prepared to risk, and lift it just off the ground in all positions of the jib. Then divide the load by a safety factor of 4 or more. Somebody here will know the acceptable factor, and clearly label the hoist for the reduced maximum load. If your chain slips a little on the load you will get a jerk that will be considerably greater than the load. Hence the safety factor, You may also crack your concrete pillar when testing if you are to optimistic with your test load. Don't stand near the jib when testing!
Buchanan

 

[babolottino]

thank you for your precious intervention, I have not yet begun construction, the iron load has not arrived, I expect to start work as soon as possible and post work progress photos, the horizontal crossbar is a 100mmm ipe of 3.60m long section the bolt of the hinge of the swivel arm is 25 mm the beam to be leaning and anchoring to the reinforced concrete column is a H HE beam from 100 mm 4 meters high, if you had other suggestions I gladly accept them thank you for your cooperation soon

http://www.oppo.it/tabelle/profilati_hea.htm

http://www.constructalia.com/italiano/recuperare_con_lacciaio/iv_tecniche_di_rinforzo_dei_pilastri



http://www.constructalia.com/italia...i_h_portanti_ad_ali_extra_larghe#.WvP1_9SLTDc


http://www.constructalia.com/repository/General Catalogues/AMLCE_ES_EN_IT.pdf


http://www.constructalia.com/italia.../he_heaa_hea_heb_hem_profili_h_ad_ali_larghe_


http://www.oppo.it/disegni/profilati_ipe.htm

http://www.oppo.it/tabelle/profilati_ipe.htm

 

[TonyM]

https://www.gorbel.com/docs/default...9fe6a36eb6e608cbd72ff000019dfa3.pdf?sfvrsn=14

Worth a read then get professional advice. The best advice so far is to get an engine hoist. Making your own swing jib hoist is about as risky as it gets.

 

[babolottino]

I have not yet started, I must get the material, however, thanks to the valuable suggestions, however I do not have to lift big loads I put as maximum capacity 500 kg, but I do not think that ever lift a load so heavy, it will be like a crane of what are built on the boats, a column a swivel crosspiece and a hoist with a diagonal tie rod to support the structure and the cantilever load, I do not know what is called in marine jargon a similar lifting frame, nothing mammoth to clarify, thanks again anyway if you have other advice, please, thank you

https://publicqa.gorbel.com/images/default-source/wall-bracket-jib-cranes/wb10077096c36eb6e608cbd72ff000019dfa3.png?

sfvrsn=5


http://shweibos.com/wall-mounted-ji...for-sale-jib-crane-services-jib-best-creative
http://www.cisco-eagle.com/catalog/...lbs-cap-14-boom-length-44h-w-38-in-air-supply

 

[Cogsy]

As others have said, the column you are attaching this thing to is the dangerous unknown. You are going to be apply serious amounts of torque to it, opposite to it's direction of strength. Here in Australia a couple of years ago, a boy around 10 years old was almost killed, and had both his hands severed, when he grabbed on to the ring of his basketball hoop attached to the brick wall of the garage at his home. Although the wall could hold the roof up and withstand demanding weather effects, the rotational moment applied to it just from this small boy was enough to make the whole thing collapse on top of him. I know your column is concrete not brick, but 500kg at the end of a 3m+ lever is an incredible amount of torque.

 

[babolottino]

the column is 5 meters high and has a square section of 55 x 55 cm, from the ceiling above it comes out if reworking iron diameter twenty-two millimeters, I repeat I put 500 kg as maximum capacity, but in reality I will never again lift more than a couple of quintals, however I have not built anything yet, I have some material beams and other materials I believe will deliver them next week, however if you had other information I invite you to participate, thanks again for the cooperation and valuable suggestions thanks

https://www.gommonauti.it/ptopic370..._per_sollevamento_del_gommone.html&highlight=

https://www.gommonauti.it/ptopic397...ommone.html&postdays=0&postorder=asc&start=10

 

[DJP]

Copy an existing design used at a marina would be my suggestion. We had a mast crane at our yacht club that was copied from cranes used at other clubs. The design and testing were proven and you should look for the same.

If you can add cables to the wall support outside of the building that will help a lot.

Let us know how it turns out after your first stress test.