Solution

The multi-functional modular stand allows an aero engine to be moved short distances or transported worldwide. One example is the Trent 500 & 700 engines typically used on Airbus A340-500, A340-600 and A330 family.

A three point lift system was devised using three screw jacks connected in a system by bevel gearboxes, couplings and drive shafts. The system was designed to be quick and easy to use by hand operation while being selflocking.

Using 50kN E-Series metric machine screw jacks of the type KTE1805 keyed were used. The 24:1 gear ratio combined with the 9mm lead on the screw provided a mechanism that was self-locking and minimum torque input for hand operation. Worm shafts are chrome plated and the screw is protected by a PVC bellows boot for protection and anti-corrosion. The system also uses two Neeter Drive range-N series 35 bevel gearboxes with a 3-way solid shaft model 35341M and 1:1 gear ratio configuration.

Products Used

• Screw Jacks - E-Series
• Bevel Gearboxes - Neeter Drive Range-N
• System Components - Couplings
• System Components - Drive Shafts

Solution

For aircraft maintenance access Power Jacks screw jacks are ideal for raising and lowering levels/platforms. The screw jacks can be individually motorised or driven as a mechanically linked system. Safety features that can be employed include safety nuts, brakes and wear monitors. The picture opposite shows jacking systems lifting the aircracft access structure (tail dock) for a jumbo jet.

Products Used

• Screw Jacks - E-Series
• Bevel Gearboxes - Neeter Drive Range-N
• System Components - Electric Motor
• System Components - Reduction Gearbox
• System Components - Couplings
• System Components - Drive Shafts