Primary contents from here.
Locking wire rope prevents sudden platform falls
Overspeed Detection Device
detects abnormal speed.
When the descent speed of the platform becomes higher than the set speed, the governor automatically detects it, grab the wire rope instantaneously and hold the load reliably.
Slack Rope Device
engages if preset angles are exceeded.
Slack Rope Device engage the safety wire rope to stop operation when platform exceeds pre-set angles.
Upper / Ultimate Limit Switch
Upper limit switch detect obstruction and stop ascending.
In case the Upper Limit Detection Switch does not activate with some reason,
Ultimate Limit Detection Switch detect obstructions and stop lifting due to power shut off automatically.
prevents problems due to overloading
Overload Detection Device
detects excessive loads on platform and stops ascending.
Can be confirmed visibly when the device activates.
Separated from Traction Hoist
Separated from the main body, easy to handle on site and easy to maintain.
Load Adjustable Spring Units
Can be adjusted to the required load.