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A double-redundant hydraulic actuator with single-ended mechanical lock

A technology of hydraulic actuation and mechanical lock, applied in the field of servo actuation, can solve the problems of low integration, high risk of oil leakage in pipeline connections, complex system composition, etc., to achieve the effect of improving reliability and saving axial installation size

Active Publication Date: 2020-09-18
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a double-redundancy hydraulic actuator with a single-end mechanical lock, which solves the problems of the existing aircraft landing gear retractable centralized energy hydraulic actuating system. Disadvantages of complex system composition, high risk of oil leakage in pipeline connections, and low integration

Method used

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  • A double-redundant hydraulic actuator with single-ended mechanical lock
  • A double-redundant hydraulic actuator with single-ended mechanical lock
  • A double-redundant hydraulic actuator with single-ended mechanical lock

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Embodiment Construction

[0024] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0025] figure 1 It is a schematic diagram of a double-redundancy hydraulic actuator with a single-end mechanical lock provided by an embodiment of the presen...

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Abstract

The invention discloses a dual-redundancy hydraulic actuator provided with a single-ended mechanical lock. The dual-redundancy hydraulic actuator comprises a first power part, a second power part, a high-pressure safety valve, a fuel filter, a supercharging oil tank, a filling valve, a one-way valve, an electromagnetic directional valve, a first balancing valve, a second balancing valve, an actuating cylinder, a first microswitch, a second microswitch, a third microswitch and a fourth microswitch. The shortcomings of system composition complexity, high pipeline connecting oil leakage risk andlow integration degree of an existing undercarriage control centralized energy-type hydraulic actuation system are overcome.

Description

technical field [0001] The invention belongs to the technical field of servo actuation, in particular to a double-redundancy hydraulic actuator with a single-end mechanical lock. Background technique [0002] With the continuous development of my country's aviation field, the types of fixed-wing large UAVs are becoming more and more abundant, and their demand is also increasing. Compared with manned aircraft, drones are characterized by light weight, slow speed, long-term endurance, and easy maintenance. The traditional aircraft landing gear adopts centralized hydraulic energy power-by-wire actuation system. The system pipeline is complex, which increases the risk of high-pressure oil leakage. In addition, after the landing gear is retracted in place, it needs to rely on an independent mechanical lock system. To withstand the gravity load of the landing gear, the retractable system of the landing gear has a complex structure and takes up a lot of space. Contents of the in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B21/00F15B21/041F15B15/14F15B15/20
CPCF15B15/1423F15B15/1452F15B21/00F15B21/041
Inventor 张朋郝伟一
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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