 |
| In case that a cable installed in a Spring balancer is
cut or a suspended tool is disengaged. A cable will snap back due to the
tension of spring involved in a Spring balancer, causing the dangerous situation
such as the injury to personnel etc. This new device has developed to protect
personnel from such the danger. |
 |
| As soon as a cable is cut, a drum revolves rapidly winding
a cable up. Rapid revolution of the drum generates centrifugal force. The
centrifugal force makes a Ratchet on a spring case pushed out and the ratchet
sticks in a wheel fixed on a cover, stopping the revolution of the drum. |
 |
| Model |
EWA-22 |
EWA-30 |
EWA-40 |
EWA-50 |
EWA-60 |
EWA-70 |
| Capacity(kg) |
15-22 |
22-30 |
30-40 |
40-50 |
50-60 |
60-70 |
| Cable travel(m) |
1.5 |
1.5 |
1.5 |
1.5 |
1.5 |
1.5 |
| Mass(kg) |
8.8 |
9.2 |
12.0 |
12.6 |
13.3 |
13.6 |
| Dimension(mm) |
A |
218 |
218 |
220 |
220 |
220 |
220 |
B |
177 |
177 |
206 |
206 |
217 |
217 |
C |
428 |
428 |
428 |
428 |
445 |
445 |
| Snap back prevention device |
distance to stop within 100mm |
|
|
