Lifts
Pulley System
The pulley system described here is based off the lift that forklifts use. By using a series of slides and sprockets with a chain, you can lift a significant amount of weight with a relatively compact system. However, the pulley system will generate a lot of friction unless properly lubricated and fitted with a properly sized chain. Requires at least 4 motors. This is a three stage system that can reach 30 in. at the bottom of the pickup mechanism. Diagram below of lifting.
The pulley system described here is based off the lift that forklifts use. By using a series of slides and sprockets with a chain, you can lift a significant amount of weight with a relatively compact system. However, the pulley system will generate a lot of friction unless properly lubricated and fitted with a properly sized chain. Requires at least 4 motors. This is a three stage system that can reach 30 in. at the bottom of the pickup mechanism. Diagram below of lifting.
Scissor
Bar Lift
To the left is a six bar linkage. A four bar linkage of that and is simply a parallelogram. One bar is simply a lever. Adding chain to a the bar adds complexity but allows for a parallel point at the end or easy ratios of ration of the mechanism attached to the chain. A reverse linkage is another thing in itself because it allows the lever to have a linear motion at the A slideshow below contains all types of bar lifts.
To the left is a six bar linkage. A four bar linkage of that and is simply a parallelogram. One bar is simply a lever. Adding chain to a the bar adds complexity but allows for a parallel point at the end or easy ratios of ration of the mechanism attached to the chain. A reverse linkage is another thing in itself because it allows the lever to have a linear motion at the A slideshow below contains all types of bar lifts.