Calculating Hollow Square Size for a Simple Lifting Machine

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In summary, the conversation discusses creating a simple machine to lift a display using hollow square construction. The weight of the display and support is 25 Kg and there is a question about calculating the correct moment in the construction. The possibility of using a formula to determine the right size of the hollow square is also mentioned. The conversation prompts further consideration of the forces acting on each tube in the construction.
  • #1
sekedarimaji
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Homework Statement


I'am trying to make a simple machine which is to lift a display up and down. The construction mostly using hollow square.
so far I got the weight of the display and the support is 25 Kg and I have this kind of construction.
Beam.jpg

if simplified become like this

Beam 1.jpg

Homework Equations


which is the right moment happen in that construction?
a.
Beam 2.jpg

b.
Beam 3.jpg

Is that necessary to calculate the moment?
how do i get the right hollow square size?

The Attempt at a Solution

 
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  • #2
Assuming your frame is rigid, both diagrams are equivalent.
 
  • #3
mfb said:
Assuming your frame is rigid, both diagrams are equivalent.

so calculating the moment is not necessary?
is there any formula to get the right size of hollow square?
 
  • #4
Which moment, necessary for what?
Right size for what?
 
  • #5
Ask yourself what forces each tube is subject to. Perhaps start with the horizontal tube.
 

FAQ: Calculating Hollow Square Size for a Simple Lifting Machine

1. How do you calculate the size of a hollow square for a simple lifting machine?

The size of a hollow square for a simple lifting machine can be calculated by using the Pythagorean theorem. This involves measuring the distance between the four corners of the square and using that measurement as the length of the sides of the square. The formula for the Pythagorean theorem is a² + b² = c², where a and b are the lengths of the sides and c is the length of the diagonal.

2. What materials are typically used for a hollow square in a lifting machine?

The materials used for a hollow square in a lifting machine depend on the specific application and the weight it needs to lift. Generally, materials such as steel, aluminum, or other strong and durable metals are used for the frame of the square, while the hollow center can be filled with lighter materials such as wood or plastic.

3. How does the size of the hollow square affect the lifting capacity of the machine?

The size of the hollow square directly affects the lifting capacity of the machine. A larger square will have a greater surface area and therefore be able to support more weight. However, the thickness and strength of the materials used also play a significant role in determining the lifting capacity.

4. Are there any safety considerations when calculating the size of the hollow square for a lifting machine?

Yes, safety should always be a top priority when designing and calculating the size of a hollow square for a lifting machine. It is important to ensure that the materials used are strong enough to support the intended weight and that the square is properly reinforced to prevent any accidents or failures during use.

5. Can the size of the hollow square be adjusted for different lifting needs?

Yes, the size of the hollow square can be adjusted for different lifting needs. However, it is important to keep in mind that changing the size of the square can also affect the overall stability and safety of the lifting machine. It is recommended to consult with a professional engineer to determine the appropriate size for the specific lifting needs.

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