jackscrew
Mechanical lifting device
A jackscrew is a lifting device that uses a threaded shaft turned by a handle or motor to raise heavy loads—vehicles, buildings, or machinery.
The screw mechanism converts rotational force into powerful vertical lift, allowing one person to raise thousands of pounds: He positioned the jackscrew under the beam and began cranking.
Also called a screw jack.
Rotating rod for thread
- nutHard-shelled seed
- rotationTurning on an axis
- pitchFrequency of sound
- self-lockingFastens without manual effort
Raise with tackle
- raiseLift or increase
- elevateTo raise upward
- liftMechanism for vertical transport
- supportTo uphold or sustain
prop · leveling · positioning · clearance · elevation · upraise · leveler
Tool for turning fasteners
Rotational force measurement
- fulcrumLever's balance point
- effortApplied energy toward goals
- loadCarried weight or burden
- efficiencyProductive without waste
friction · thrust · work · amplification · resistance
Boat-balancing lateral float
- scaffoldingTemporary exterior work platform
- formworkMold for poured concrete
spindle
Rotating rod for thread
self-locking · irreversibility · translation · helical · collar
hoist
Raise with tackle
support · prop · leveling · positioning · clearance · elevation · upraise · leveler
wrench
Tool for turning fasteners
torque
Rotational force measurement
efficiency · friction · thrust · work · amplification · resistance
outrigger
Boat-balancing lateral float
- scaffoldingTemporary exterior work platform
- formworkMold for poured concrete
- simple machineslever, pulley, wheel and axle, inclined plane, wedge
- screws
jackscrewhydraulic jack
Fluid-pressure lifting tool
hydraulic lift · hydraulic ram · hydraulic cylinder · bottle jack · hydraulic press
screw, screwed, screwy, unscrew, screwball, screwdriver, screwing, jackstone, screwworm