The wheel hydraulic jack is a hydraulic lifting equipment designed for aircraft maintenance. It is mainly used to support aircraft wheels or landing gear for wheel replacement, horizontal calibration, target calibration and other operations.
The wheel hydraulic jack is a hydraulic lifting equipment designed for aircraft maintenance. It is mainly used to support aircraft wheels or landing gear for wheel replacement, horizontal calibration, target calibration and other operations. It meets the requirements of high load, high stability and safety. It is an indispensable tool in aviation maintenance and ground support.
1.Hydraulic cylinder and piston rod: four-stage retractable piston rod, which drives the piston up and down through hydraulic oil to generate strong lifting force
2.Hydraulic pump (manual): provides pressure to press hydraulic oil into the cylinder
3.Control valve: adjust the flow direction of hydraulic oil to control lifting and lowering; safety valve and unloading valve double protection to prevent overload
4.Safety helmet: prevent accidental descent and ensure stability after lifting
5.Wheel system components: with walking wheels, single-person push and flexible deployment, suitable for complex working conditions at airports
Based on Pascal's principle, the pressure is transmitted through a closed hydraulic system, and a small-area piston drives a large-area piston to achieve low input force conversion into high output force. During operation, the hydraulic pump pressurizes the piston rod to extend and lift the aircraft; when the pressure is released, the hydraulic oil flows back and the jack slowly descends.
Pre-check: confirm that the jack has no leakage and the hydraulic oil is sufficient
Positioning: Aim at the structural support point of the aircraft fuselage or wing (refer to the aircraft model maintenance manual for details)
Lifting: Slowly pressurize, multiple jacks need to be controlled synchronously
Locking: After lifting to the working position, lock the safety helmet to prevent accidental descent (do not rely solely on the hydraulic system)
Return: Move the reversing valve handle to the descending position, the jack gradually releases pressure, and the piston rod slowly descends
Precautions: Do not overload or unbalance to prevent structural deformation
Regular inspection: seal replacement cycle (500 hours), regular inspection of hydraulic oil cleanliness
Calibration: pressure and height accuracy calibration once a year
Storage: retract the piston rod, cover with protective cover, avoid humid environment
