Hydraulic to Electric Lifting
Now that we've seen 5 failures, it's time to change the design.
The challenge begins with the following:
It is believed that the combination of loads is causing an overload of top cable sheaves carrier. While the bolts may be strong enough for a direct load, it is suspected that they are not under a direct vertical pull. There appears to be an element of fatigue and a bending moment caused by the rotation of the sheaves, accompanied by high friction.
What is the method of improvement?
Totalifting Solutions has implemented two strategies to date:
The hydraulics and load-bearing cables been removed and replaced with an electric chain hoist. Although successful, this method requires additional work due to the size of the electric hoistIn a TLS 2P Goods Lift, high-quality motors and gearboxes have been, utilizing variable speed drive technology. This allows for soft starts and stops, thereby reducing shock loading on all other components.
Now, we need to adjust the measurements of a TLS Goods Lift to match those of a Liftaide Lift, that the vertical loading of the drive assembly remains effective.
Furthermore, we need to verify that thetaide lift structure engineered correctly to withstand the forces applied at the specific center of gravity This would vary based on the platform size and the height of the lift.
Solidworks Analysis With 1000Kgs
After our initial design process and utilizing Solidworks we can now do an analysis to show deflection with certain loads.
First we went to two times load to consider the safety factor.
And with 500Kgs
With the 500Kg load we got 5.4mm deflection
What i noticed was that the actual platform was what was moving the most.
We have also considered the load to have been distributed.
The next stage is to involve our external engineer for a more thorough review of the design and the analysis to ensure all factors of safety are within acceptable limits based on Australian Standards