Multi-dimensional posture adjusting platform for airplane ground loading maintenance

Abstract

The invention discloses a multi-dimensional posture adjusting platform for airplane ground loading maintenance, and aims to provide a posture adjusting platform which is convenient to operate, high inworking efficiency and capable of guiding mounting parts to be fed accurately. The method is realized through the following technical scheme: the front fixed supporting point and the rear movable supporting point of the multi-dimensional adjusting platform are hinged through a fork frame rear supporting point and a fork frame front supporting point; the cross lifting adjusting mechanism translates along the Z direction; y-direction translation of first-stage longitudinal movement adjustment is achieved along a first-stage sliding rail of a first-stage longitudinal adjustment mechanism througha screw rod connected with a wide-side first-stage adjustment hand wheel, and Y-direction translation of second-stage longitudinal movement adjustment is achieved by a pulley assembly along a second-stage longitudinal adjustment mechanism installation guide rail; the transverse adjusting mechanism moves along the assembled inner slide rail to realize X-direction translation of transverse and heading adjustment; the direction fine adjustment mechanism changes the heights of the front bearing fulcrum and the rear bearing fulcrum of the second-stage bearing frame through the proportional connecting rod supporting mechanism to achieve pitching adjustment, transverse rolling adjustment and Z-direction height fine adjustment.

Description

technical field [0001] The invention relates to a mobile multi-dimensional attitude adjustment platform for aircraft ground support equipment mainly used for loading and maintaining aircraft components, and providing support for maintainability inspection, assembly and disassembly of engines and wings. Background technique [0002] The aero engine is the core power component of the aircraft. It is composed of a large number of parts. It works repeatedly for a long time under the environment of high temperature, high pressure, high speed and high load. Once an unexpected failure occurs, it will have a serious impact on the aircraft. After the aero-engine is used for a period of time, it needs to be disassembled from the aircraft for daily inspection and maintenance, and then the aero-engine is reinstalled in the engine installation compartment. At present, the test run of an aero-engine is an important method for checking and judging whether the aero-engine works well. Usuall...

AI Technical Summary

Problems solved by technology

Therefore, when an aero-engine is installed, these irregularly distributed pipelines must be protected to prevent these pipelines from being squeezed and damaged, thereby affecting the performance of the aero-engine

(3) The installation clearance reserved for aero-engines is often small, and the internal structure of the engine installation compartment is very complicated

This automatic engine installation vehicle has strong operability and reduces the labor intensity of workers, but its disadvantages are that the scope of application is narrow and it cannot realize fully automated installation operations

This traditional installation method has assembly problems such as low installation efficiency and poor installation quality, and cannot meet the high-quality and high-efficiency assembly requirements of modern large and medium-sized aircraft manufacturing.

There are the following deficiencies in the engine manual installation locomotive: (1) The rigidity of the overall structure of the engine installation frame is relatively poor

During the long-stroke installation feed movement, with the movement of the aero-engine, the center of gravity of the overall mechanism will change accordingly, which will cause a large deformation of the supporting frame of the carriage, thereby causing the attitude of the aero-engine to change, which is very important for the aero-engine It will have a serious impact on the installation accuracy, and even cause the extrusion and damage of the pipeline on the surface of the aero-engine

(2) The self-adjustment accuracy of the engine mounting frame vehicle is low

The attitude adjustment mechanism of each part of the engine installation frame adopts a simple manual adjustment mechanism, and the design accuracy is not high. The operator relies on work experience to repeatedly try to adjust the attitude of the aero-engine, resulting in extremely low efficiency in the actual installation of the aero-engine

(3) The maneuverability of the engine mounting frame vehicle is poor

During the actual installation process, the actual installation space of the engine is relatively insufficient, which causes great inconvenience to the engine installation work

(4) Low degree of automation and complicated operation

However, the attitude adjustment of the engine requires multiple assemblers to operate each adjustment mechanism one by one. The operation is complicated, and it is easy to cause insufficient adjustment or excessive adjustment, which increases the labor load of the operators.

(5) High labor intensity and large total labor load

The main problem caused by the installation of these two types of engines and the layout of the wing suspension is that the air inlet of the nacelle is not easily affected by the wake of the fuselage or the wing. The weight distribution of the aircraft, the air flow field, and the installation of the engine will change the speed of the airflow on the surface of the aircraft wing and the body, resulting in loss of lift and impact

The installation of the engine will cause the power failure of the wing, which will have a great impact on the stability of the vertical tail; the jet flow of the engine will increase the wave resistance, which will interfere with the pressure distribution of the wing, and in severe cases will cause flow separation; wing flutter The vibration characteristics are more complicated; in addition, the negative pressure gradient in the trailing edge region of the lower surface of the wing will more easily cause the anti-fan blade to break and fly out

Due to the existing adjustment platform for the complex installation track installation of aero-engines is heavy, the structure size is large, the movement is inconvenient, the adjustment is inconvenient and the efficiency is low when installing aircraft components

When installing the engine and wing, it is necessary to accurately locate the installation position, and the installation parts are heavy, so installation equipment is required for auxiliary installation, but the existing installation equipment is heavy, and only traction or human push is realized, and the installation efficiency is low , requires multiple people to operate and observe, visually adjust, the installation time is not less than 30min, and it cannot be installed quickly

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