Rotary SGL35, Руководство по эксплуатации и техническому обслуживанию

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3. The lift
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3.6 Safety mechanisms
Figures 5 ... 9: Safety mechanisms
Electrical

Emergency stop button on the control unit
(Figure 5)

Broken chain and slack chain switch (lifting
chain): consists of a micro switch, which is fitted
in each column at the bottom. This module
permits any movement of the lift to be halted if a
chain is broken or unusually slack. (Figure 6)
Hydraulic

Broken line switch: consists of a valve in a
hydraulic cylinder. This valve is designed to limit
the lowering rate if the hydraulic line fails
(breaks). It is set so that the lowering rate does
not exceed the nominal rate by more than 1.5 x.
Mechanical

Mechanical latching system: consists essentially
of a spring-loaded latch which is fitted on each
column, as well as a bar with notches on each
slider block. This latch and bar assembly stops
the lift from accidentally dropping in the event of
a leak in the hydraulic system or breaks in the
system components (Figure 7)

Arm restraints: consist of a ring gear on the end
of the arm which engages the pinion of the lift
slide. This assembly is activated as soon as the
slide leaves its lowest point to prevent the arms
from slewing. (Figure 8)

Mechanical synchronisation control: consists of
two synchronisation cables which connect the
slider blocks to each other. The cables prevent
incorrect alignment of one slider in relation to
the other slider if the weight is unevenly
balanced crosswise. (Figure 9)
Ergonomics

Foot protection: metal plates on both sides of
the base plate of both columns and a metal
baffle plate in the outside of the arms which
prevent a foot becoming trapped under the
slider block or arm(s).
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