Electric screw jack system is a mechatronic motion execution unit that cleverly combines the motor, reducer, bevel gearbox, and worm gear screw jack through couplings, connecting rods, etc.It can realize the linkage use of multiple worm gear screw jacks, and can meet the requirements of multiple stable, synchronous, reciprocating lifting, and also realize flip movement.
Hand operated screw jack ( also called hand wheel screw jack) is suitable for low speed, light load, manual operation applications, the jack lifting load is generally 50kg-15-ton, which is usually driven by a handwheel. Our handwheel offers a range diameter from 100mm to 400mm as a standard.
When the screw jack is used at the subsea, we need to consider the pressure, corrosion, strength of the input shaft, sealing, etc. Here SIJIE shares with you a case study of stainless steel screw jack that we have designed and manufactured for our customers for subsea applications.
This solution is completed by two 150-ton heavy-duty machine screw jacks, each jack dynamic load up to 120-ton and the system can lift 240-ton dynamic load. The two machine screw jacks have a span of 4m and are driven by a 22kw three-phase asynchronous motor in the middle, the torque is transmitted to the machine screw jacks on both sides through a reducer and universal joint coupling, and the lifting speed is 80 mm/min.
