Ground combined jacking device and method for large-tonnage tilting rotorcraft

By designing a ground-based joint lifting device for a large-tonnage tiltrotor aircraft, and employing a ball joint configuration and electric cylinders, the device enables precise positioning and attitude adjustment of the tiltrotor aircraft. This solves the ground-based joint testing requirements of the large-tonnage tiltrotor aircraft under different modes, and achieves safe and rapid assembly, disassembly, and load transfer.

CN121929341APending Publication Date: 2026-04-28CHINA HELICOPTER RES & DEV INST
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Patent Information

Application Number
CN202511929751.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-19
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Existing technologies cannot meet the ground joint testing requirements of large-tonnage tiltrotor aircraft in helicopter mode, transition mode and turboprop aircraft mode, and the installation process is complicated, has high safety risks, and is inconvenient to disassemble and assemble.

Method used

Design a ground-based combined lifting device for a large-tonnage tiltrotor aircraft, including a first lifting mechanism, a second lifting mechanism, and a tail lifting mechanism. The device achieves precise positioning and attitude adjustment of the tiltrotor aircraft through a ball joint configuration and an electric cylinder, and uses a whole-aircraft towing method to enter the test area, avoiding hoisting and blade removal.

Benefits of technology

It enables safe and rapid assembly and disassembly of tiltrotor aircraft in different modes and load transfer, shortens the assembly and disassembly time of the test aircraft on the ground joint test bench, and improves assembly and disassembly efficiency and safety.

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Abstract

The invention belongs to the technical field of aircraft ground tests, and particularly relates to a large-tonnage tilting rotorcraft ground combined jacking device and method. Comprising a first jacking mechanism, a second jacking mechanism, a tail jacking mechanism and a control unit which are symmetrically arranged on the two sides correspondingly. The distance between the first jacking mechanism and the second jacking mechanism is determined according to the distance between the left wing nacelle and the right wing nacelle of the testing machine; the top ends of the first jacking mechanism and the second jacking mechanism are provided with a first displacement sensor and a second displacement sensor respectively, and the top ends of the first jacking mechanism and the second jacking mechanism can ascend and descend in the direction perpendicular to the ground. The tail jacking mechanism is arranged in the pit shaft relative to the central surfaces of the first jacking mechanism and the second jacking mechanism; a third displacement sensor is installed at the top end of the tail jacking machine, and the top end of the tail jacking machine can ascend and descend in the direction perpendicular to the ground. The first displacement sensor, the second displacement sensor and the third displacement sensor are in communication connection with the control unit. And rapid switching between the test and the test flight can be rapidly realized.
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