Static pressure testing device for unmanned plane oil gas damper

A technology for static pressure testing and shock absorbers, applied in the field of static pressure testing devices for unmanned aerial vehicle oil and gas shock absorbers, can solve the problems of unfavorable use cost and convenience for delivery to users, prone to human misjudgment, unfavorable maintenance work, etc. , to achieve the effect of facilitating field operation, efficient and fast testing, and simple testing method
CN109115486APending Publication Date: 2019-01-01XIAN AISHENG TECH GRP
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN AISHENG TECH GRP
Publication Date
2019-01-01

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Abstract

The invention discloses a static pressure testing device for an unmanned plane oil gas damper, and the device is composed of mounting seats, a screw driving platform, a servo motor, a tension and pressure sensor, a displacement sensor and a control computer. A shock absorber is installed between the two mounting seats through a connecting member. The control computer judges the working state of the shock absorber according to a value of the tension and pressure sensor, sends a stroke compression command and controls the servo motor to compress the shock absorber on the screw driving platform.The pressure sensor measures and feeds back a compression force transmitted by the shock absorber. After the control computer collects and judges and adjusts the compression force, the static pressureof the shock absorber can be tested quickly and efficiently, so as to avoid the repeated recycling and landing of the unmanned plane. The reduction of the static pressure of the shock absorber causesa condition that the compression stroke of the shock absorber exceeds an allowed range. The testing device is simple in structure, is convenient for maintenance, facilitates the operation in the field, is high in test precision, is easy to read test results, is strong in environmental applicability, and is low in cost of use.
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Description

technical field

[0001] The invention relates to the technical field of static pressure testing, in particular to a static pressure testing device for an oil-gas shock absorber of an unmanned aerial vehicle. Background technique

[0002] The recovery methods of drones are mainly divided into two types: taxi landing and parachute landing. Rolling and landing has high requirements on the site. For small and medium-sized UAVs, in order to recover them easily and conveniently, parachute recovery is often used, and the energy during landing is absorbed through the shock absorber. The interior of the shock absorber is filled with aviation hydraulic oil and compressed nitrogen, and the energy is absorbed by the damping force of the liquid oil flowing through the restrictor hole and the spring force of air compression. The static pressure in the air cavity is proportional to the force of the air spring, which is an important parameter to determine the cushioning performance of the U...

Claims

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