Compensation device for hydraulic oil or nitrogen pressure damage of landing gear for airplane weighing

Abstract

The invention belongs to the technical field of airplane weight measurement, in particular to a compensation device for hydraulic oil or nitrogen pressure damage of a landing gear for airplane weighing, and solves the problems that the conventional airplane weight measuring method is low in digital degree, the process is complicated and data does not have any real-time property. The first way of a four-way adaptor nozzle is fixedly connected with an oil injection nozzle or an air intake nozzle of the landing gear; the second way and the third way are fixedly connected with a pressure sensor; the fourth way is fixedly connected with an oil nozzle of a hydraulic isolation cylinder; the signal output end of the pressure sensor is connected with a weight and balance computer; the weight and balance computer is connected with the control end of a hydraulic electromagnetic switch valve and an external hydraulic pump; hydraulic oil of the external hydraulic pump are injected into an oil nozzle on the side of a guide rod of a sliding separator of the hydraulic isolation cylinder through the hydraulic electromagnetic switch valve and a hydraulic one-way throttling valve I; and an oil return port of the hydraulic electromagnetic switch valve is communicated with an oil storage chamber through a hydraulic one-way throttling valve II. The compensation device has the advantages that: the weight and gravity center of an airplane are accurately weighed and calculated, and a basis is provided for the safety of the airplane.

Description

technical field [0001] The invention belongs to the technical field of aircraft weight measurement, in particular to a compensating device for the distortion of landing gear hydraulic oil or nitrogen gas pressure used for aircraft weighing. Background technique [0002] At present, the domestic aircraft weight is mainly measured by placing a floor scale in front of the aircraft and under the main landing gear tires. This measurement method is low in digitization, cumbersome, and the data is not real-time. The acquisition of weight and center of gravity parameters is completely estimated by manual measurement data. Contents of the invention [0003] The purpose of the present invention is to solve the problems of low digitization, cumbersome process and non-real-time data in the existing aircraft weight measurement method; to solve the static friction between the landing gear pillar and the inner cavity of the piston, which leads to the problem of using directly collected ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low digitization, cumbersome process and non-real-time data in the existing aircraft weight measurement method; to solve the static friction between the landing gear pillar and the inner cavity of the piston, which leads to the problem of using directly collected The problem that the aircraft weight value calculated by hydraulic oil or nitrogen pressure is too small

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