Hoists: Brakes for Gantry Crane & Overhead Crane
 
   
 
What is the using principle for brakes?

The brakes are able to control hoist and long travel movement and sometimes cross travel. When gantry crane and overhead crane work, both them are using mutual principles, that is:
1.  Power on – Brakes off
2.  Power off- Brakes on

Solenoid will push the brake off when the power is turned on, allowing the drum or shaft to turn. On the contrary, when a counterweight or two springs apply the brakes to the drum or shaft, the power is tuned off.

Is it important to check and test the brakes?

But how and when the operators test the brake? In general, we simply raise the load a few inches to stop the hoist. And then keep holding the brakes set automatically. Are we now ready to the next proceeding, right? Wrong! By this time the only tested are holding brakes. So how about the control brakes? Control brakes are here to guard the load from speeding up. Should the load is very high and the mechanical load control brake fails when you attempt to control during load lowering, the holding brakes may be not able to stop the load safety.

Now that we understand holding brakes and control brakes are working together to provide a safe load operation for gantry crane and overhead crane, the process for checking the brake system is important.

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