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7 Safety devices
■ M side lowering stop hook and chain break safety device
Provided on the M post and the M carriage, respectively, to prevent the lift from falling in case of oil
leakage or drive chain breakage. Note, however, that the lowering stop hook will be engaged only
when the lift is raised up to 210 mm or more from the lower limit position.
■ S side chain break safety device
Provided on the sub-post and the sub-carriage to prevent the sub-post-side lift from falling in case of
the breakage of the synchronizing chain (driven chain).
Leaf chain
Cap bolt
Safety spring
Hook return spring
Hook release lever
“Disengage”
“Engage”
“Engage”
When the hook is released
When the chain is broken
Replace every
four years
Leaf chain
When the chain is broken
In a normal time
Catch gear
head
Catch gear
Catch gear shaft
Safety rod
