Is the jack screw jack screw system to raise or lower the donkrak . At this screw jack , to raise or lower the screw jack rotating Screw enough . By turning a threaded pinion gear will rotate gears umbrella , round umbrella gears will rotate grooved tube , then rotate the threaded rod which in turn rotate the screw jack to move up or down in accordance with the minimum and maximun limit of the specification screw jack itself.
Working drawings screw jack
Figure threaded assemblies screw jack
Number section - the main part of the screw jack
1 . framework
2 . anvil
3 . grooved tubes
4 . threaded rod
5 . threaded tube
6 . Umbrella gear
7 . pinion gear
8 . connection
11 . bracelet steel ball bearings and axial
16 . pivot player
17 . holder
18 . arm holder
To move up and down As well there should be a round jack , such as tightening or loosening a bolt, then the holder and the handle holder is required to rotate the screw jack .
Generally the tip forming question mark " ? " , For screw hook into the player , while the other end is more like a letter " Z " or " L " , to facilitate turning the jack .
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