Use and operation:
The lifting jack may be set up only on horizontal-even, capable
of foundation.
The weight, e.g. a steel girder or a wood purlin, will be put on the
lifting jack. The fixation can be made by drillings
in the heading fork.
Now the height is infinitely variable adjustable by cranking.
Important:
The weight which is put on the lifting jack must be parallel
raised or lowered. After achieve the desired position
the weight must be secured additional.
It is possible to fix a crank on both pages of the spindle
transmission to the pitman.
The crank of the lifting jack is adjustable in the length,
so it can be turned under weight with a long lever arm.
For fast turning up or down a short lever arm is adjusted.
Take up a weight:
A weight e.g. a steel girder is situated on square timbers.
The underframe of the lifting jack must be put below the carrier.
With slinging chains or ropes the carrier is fixed to the load loop
of the lifting jack.
The weight is lift up and put down again on 2 supports so highly
that you can drive afterwards with the heading fork below
the carrier.
Now the carrier can be lift up to the desired position.
Putting down the weight takes place in reverse succession.
10
11
12
1,11 m
1,225 m
13
2,70 m
1,645 m
0,80 m
0,
68 m
1,59 m
plan view:
9
3
