A landing gear assembly and testing integrated equipment

Abstract

An integrated equipment for landing gear assembly and testing, including a mechanical system, a measurement system and a control system. The mechanical system includes a bottom plate, a lower workbench, a column, a slider, an upper workbench and a quick-change positioning block; the lower workbench is slidably installed on On the bottom plate, the column is fixedly installed on the bottom plate, the slider is connected to the front of the column through a screw structure, and the upper worktable is fixedly connected to the slider; the lower worktable is equipped with a quick-change positioning block; the measurement system includes a tension sensor, a displacement sensor , a grating ruler and a data processor; the tension sensor is set on the slider or the upper worktable, the displacement sensor is also set on the slider or the upper worktable, and the grating ruler is set on the column, which can accurately detect the movement of the slider up and down. Position; the data collected by tension and pressure sensors, displacement sensors and grating rulers are uploaded to the data processor for data processing; the control system includes a motor, a motion controller, a PLC and a host computer that are electrically connected in turn.

Description

technical field [0001] The invention relates to the field of landing gear struts, in particular to an integrated equipment for assembling and testing landing gear. Background technique [0002] Due to the compact and complex structure of aircraft landing gear pillars, it is difficult to assemble them by putting tubes, sleeves, sealing rings, etc. inside the deep holes to form a multi-layer structure. The buffer assembly process is usually divided into three stages: initial assembly, hard assembly and test. The initial assembly process roughly includes: subassembly (without installing seals) - trial assembly - detection size - repair adjustment - motion detection - disassembly and cleaning; The assembly process generally includes: seal assembly - subsection assembly - cylinder rod alignment assembly - size inspection; the test mainly includes: air tightness inspection - oil and gas filling - running-in test - high and low temperature test - static pressure curve test, etc. ...

AI Technical Summary

Problems solved by technology

[0003] At present, the landing gear manufacturing industry still mainly relies on skilled workers to use simple fixtures and hand tools for assembly. Usually, one of the two main structural parts (outer cylinder or piston rod) of the buffer is fixed on the fixture. The assembly is carried out by manual lifting or crane assistance, and after assembly, the whole is transported to the special inspection fixture to inspect the technical indicators such as stroke, length, angle, etc. The inspection process also mainly relies on manual push and pull of the piston rod, and is measured by ordinary measuring tools and digitalized. The level is low, the workload of repeated handling in the work is heavy, and the labor intensity is high; during assembly, it is impossible to accurately judge whether the seal is intact after it is put into the cylinder, and only rely on the experience and feeling of the operator to judge, often resulting in subsequent airtightness testing. defect delivery

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