The Braking Performance Test of Elevator Safety Gear

Views: 613 Author: Site Editor Publish Time: Origin: Site

When the elevator speed exceeds the set speed of elevator speed limiter or when the suspension rope is broken and slack, Elevator Safety Gear Device will activate emergency stop and clamp the lift car on the guide rail.

u=2592725212,2248915571&fm=26&gp=0.jpg

Figure- A certain type of safety gear

The safety gear test should be carried out in free fall, and the following data should be measured directly or indirectly:

a) Total height of falling

b) Braking distance

c) Average braking force

d) Maximum and minimum instantaneous braking forces

e) Allowable mass (P+Q)1=brake force/16

When the lift car with rated load is in free fall, the average deceleration of the progressive safety gear during braking should be 0.2gn~1.0gn (gn is the standard acceleration of gravity, and the value is 9.81m/s2).

文字文稿1_01_副本.png

Finally, the test engineers can select the appropriate data interval for the collected data, then they are able to use the software to automatically grab the data nodes, and perform specific formula calculations. As a result, related test results such as action speed, deceleration, braking distance, braking force can be obtained immediately.


×

Contact Us