Protection Frame for trucks falling on side

Nobody has faced these things???

It is not clear from your description how or why these trucks are falling on their side. It seems to me that if trucks falling over is a common occurrence, the first solution would be to prevent the trucks from tipping over, not designing a structure to catch them. What sort of trucking operation is this?

We've been here before - see this post and then ask some more questions.


Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

Pretty sure this problem could be solved at the operations level. Develop a procedure to properly load and unload your dump trucks. I am on a site with hundreds of dump trucks running all day long and have not seen this happen. They must be doing something wrong.

I would imagine if you are hauling random objects (concrete blocks, engine blocks etc) it would be easy to overload one side and not distribute the load equally on the bed. Maybe while tilting the bed up some of these objects roll to one side and cause the tipping. Either way, it seams more like a procedure issue, would it be cheaper to just take care when loading and restrict the capacity?

Long ago when I actually drove a dump truck, I noticed two things.
First off, primary problem is soft ground on construction sites. On the common US-type of dump trailer, it shifts all weight to the rear axle when dumping, and if the ground is soft, you have problems.
Second item is condition of the trailer. At the different pinned connections in the dump linkage, if you get any slack in those linkages, it'll let the trailer tilt more than the wheels are, and then you have problems.
You could design a frame to prevent this, but seems a poor way to approach the problem.

Dear LittleInch (Petroleum),

Thank you informing me on your forum on this subject. I went through it.
Did you finally design anything? Any pics of final product?
I am struggling with proper way of applying the loads and dont know how and where to apply the truck load when it is raised?

Any guidance or direction will be appreciated
if you like to email me I can provide my email address

Thank you
You are the only one that I found on internet for help

I was just answering the post. As others have said, the main aim is to park these on level firm ground then lift in a controlled manner. See this as an example of what should be done.


You could build something like this - this is the only picture I've seen where by some sort of structure is involved.

The point is that when you lift the body of the truck, that is where the weight is so anchoring the rest will just twist the body if the truck isn't level or starts to tip. Fix the root cause first. Some more details of what and why you've been given this task would be illuminating.



Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

LittleInch (Petroleum),
Thank you for the information.
As I had stated in my post the client is not looking for alternative solution of hydrulic liftof truck but providing a something like bollards or protection to the sides of the truck.

Following you forum what did you end you to do? Didnt you use columns or bollards?

I need to know how to design the bollard or column to take the truck from rolling

what is the load from truck on column/ bollard?

Thank you

Are you in U.S.?
I am in states.

Just to be clear here - I did not design any, I did not need any such structure.

what needs to happen is the correct tipping base (flat, level, strong) and operating procedures to stop the trucks becoming unstable in the first place. Anything you build would need substantial strength and foundations and if you can build that then you can build a firm, stable base for the trucks to use when tipping.

If you really really want to include some sort of protection cage, then work on the basis of minimal movement ( say 300mm) before the side of the truck touches the support frame - essentially they would need to drive the truck in a very straight line between a set of tall poles/ cage / concrete wall able to withstand a significant sideways load -what load? you work it out based on the load of a truck, angle of the body and the moment arm of the chassis.

When you start to imagine what this would cost to build and the limitations you would impose on the drivers and operation, you start to realise why you don't see any.....

I am surprised anyone in the US is contemplating such a device and no, I'm not based in the US.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

Siderule,
Any comments? Ideas?

StrP88,

I believe you have received solid comments and ideas already. Maybe follow the advice given by Littleinch?

If you are stubborn enough to proceed with your idea, have you even tried to throw any numbers at this? You should have produced a sketch by now, have rough numbers on the weight of dump trucks. With your sketch you can determine where contact would be made with whatever device you want to design. This will allow you to determine your bending, shear and possibly axial loads.

It just sounds like you have an idea, that was probably given to you by your boss or client or someone in the field. I would bring back these comments to whoever led you down this path, and see if you all can agree on a new solution.

if you decide this is the route you want go down, then do some engineering! Give us sketches and numbers, not ideas, if you want help.