Designing Chain Lifting Device for 400 Metric Tonnes

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Discussion Overview

The discussion revolves around the design of a lifting device capable of lowering a load of 400 metric tonnes through a height of 50 meters. Participants explore various design concepts, including mechanical and hydraulic systems, and seek suggestions for next steps in the design process.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant proposes a two-pronged tower arrangement with guide rails and a windlass-type pulley system powered by heavy-duty anchor chains.
  • Another participant suggests that the design resembles a crane or monorail and recommends building beams with cables and sizing a motor and gearbox for the required torque.
  • A different participant questions the necessity of the device, suggesting that researching crane manufacturers could provide valuable insights and connections.
  • A later reply reiterates the initial design concept and suggests that hydraulic cylinders might be more effective for controlling such a heavy load.
  • Another participant expresses interest in using hydraulic cylinders and inquires about the advantages of hydraulic systems over chain systems.

Areas of Agreement / Disagreement

Participants present multiple competing views regarding the design approach, with some favoring mechanical systems and others advocating for hydraulic solutions. The discussion remains unresolved as no consensus is reached on the best design method.

Contextual Notes

Participants have not fully explored the assumptions or limitations of their proposed designs, and there are unresolved questions regarding the specific requirements for torque and load handling.

Who May Find This Useful

Individuals interested in mechanical engineering, design of lifting devices, or hydraulic systems may find this discussion relevant.

scott_eng
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I'm looking for some input on the design of a lifting device.

The design is required to accurately lower lower a load of 400 metric tonnes through a height of 50m, return to the top of it's travel and lower the next load and so on. I'm currently thinking along the lines of a two-pronged tower arrangement with guide rails located inside of the tower. The power is supplied by heavy duty anchor chain on each inside side and a windlass-type pulley system at top and bottom.

Does anyone have any suggestions as to next steps to take?
 
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sounds like a crane, or a monorail
Build some beams, with some cable, and size a motor and gearbox to your required torque
 
Are you asking this for your own interest and curiosity, or do you really need one of these things? If you need one, then I suggest you Google a bunch of crane manufacturers. In fact, I suggest you do it even if it's just out of interest. You'll get some knowledgeable people very eager to talk with you and tell you about their great products.
 
scott_eng said:
I'm looking for some input on the design of a lifting device.

The design is required to accurately lower lower a load of 400 metric tonnes through a height of 50m, return to the top of it's travel and lower the next load and so on. I'm currently thinking along the lines of a two-pronged tower arrangement with guide rails located inside of the tower. The power is supplied by heavy duty anchor chain on each inside side and a windlass-type pulley system at top and bottom.

Does anyone have any suggestions as to next steps to take?

Hydraulic cylinders would work better seeing how you are trying to control 400,000 kg!

CS
 
I'm also looking into hydraulic cylinder as a way to lift. Thinking of two working side by side to lift the load. What advantages do I gain over using chain?
 

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