There are many different uses for lead counterweights on an industrial scale. When most people think of counterweights, the first thing that comes to mind typically includes a bridge, where counterweights are used to lift the bridge to allow boats to pass underneath.
Bridges
This type of bridge counterweight can be used for two different types of bridge lifts. One is called a vertical lift, where smaller lead counterweights are used to lift a section of the bridge straight up, with the actual section of the bridge remaining horizontal and parallel.
A bascule lift bridge or a bascule bridge uses a heavier counterweight that raises the bridge span in an upward direction to allow for boats or water traffic to pass underneath.
Elevators
In freight elevators or elevators used in high-rise construction, lead counterweights are used to reduce the lift required by the motor. By using the counterweights to offset as much as 50% or more of the load weight, the amount of work the motor has to do is much less. This allows for a greater lift capacity over a longer upward distance with increased speed and less wear and tear on expensive motors.
Cranes
Cranes also use counterweights to complete their lift. With the design of the crane, the counterweight is typically close to the tipping point. The tipping point on a crane is the load amount that will cause the crane to tip, so the load has to be lighter than the tipping point. By using the counterweight, the loads can be heavier than the crane would be able to lift without tipping if the counterweight wasn’t present.
It is essential to understand all the factors in play when developing counterweights for industrial applications. By ensuring the counterweight is the right weight it provides a safe, effective way to increase load and capacity through a lift over a distance.
