The most comprehensive construction elevator cage drop test method in 2016

All newly installed construction lifts should undergo a drop test of the rated load of the cage at least once every three months. Today, the editor summarizes the methods for the drop test of construction elevator cages. I hope it will be helpful to you! When the safety device automatically stops or makes noise during normal operation of the construction lift, the operation should be stopped immediately and the manufacturer should be notified.
During the drop test, no one is allowed in the cage. Only after confirming that all components of the construction lift are faultless can the following steps be performed:
Cut off the power supply, connect the wires from the ground control button box to the power box, and straighten out the cables to prevent The cable got stuck when the cage was raised and lowered.
After installing the rated load in the cage, turn on the main switch and operate the button box on the ground to make the cage rise about one meter and stop.
. Press the fall button and hold it. At this time, the motor brake is loose and ineffective. When the cage falls in a free state and reaches the safety device action speed, the cage will stop smoothly on the guide rail frame.
Note that if the cage has not been stopped by the safety device when the bottom of the cage is about one meter above the ground, the fall button should be released immediately to allow the motor to resume braking to prevent the cage from hitting the bottom.
When trying to start the cage, it should not move upward because the safety microswitch has cut off the control power at this time. If it can still move, the microswitch should be readjusted.
The above is a summary of the construction elevator cage drop test method for everyone. Beijing Jiuhong Heavy Industry is a professional construction elevator manufacturer. We look forward to your visit and guidance!