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Function control valve for support rod actuating cylinder of landing gear

An actuating cylinder and landing gear technology, applied in the direction of fluid pressure actuation device, servo motor assembly, mechanical equipment, etc., can solve the problems of increased weight, reduced reliability, difficult structural layout, etc., to eliminate pressure increase, improve Reliability, weight control effect

Active Publication Date: 2015-03-25
LANDING GEAR ADVANCED MFG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, when the landing gear strut actuator is realized, the hydraulic lock function and the rodless chamber oil compensation function are generally completed by two independent hydraulic control components, which will increase the complexity of the hydraulic system design and structure. Problems such as difficulty in structural layout, increased weight, and reduced reliability

Method used

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  • Function control valve for support rod actuating cylinder of landing gear
  • Function control valve for support rod actuating cylinder of landing gear
  • Function control valve for support rod actuating cylinder of landing gear

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Embodiment Construction

[0028] Such as figure 1 As shown, the present invention is a functional control valve that installs the structural parts constituting the oil compensation function and the hydraulic lock structural parts including the thermal expansion valve 11 in the same valve body 1, and the bottom of the valve body 1 is designed with four lug holes. It is used to fix the function control valve on the outer cylinder of the strut actuator 36. The radial cylindrical hole of the valve body 1 is equipped with the fourth nozzle 5, the second nozzle 6, the third nozzle 18, the first pipe Nozzle 15 and sealing ring 7, the fourth nozzle 5, the second nozzle 6, and the third nozzle 18 are curved nozzles, and the first nozzle 15 is a straight nozzle. On one side of the cylindrical hole that communicates in the axial direction of the valve body 1, an end cap 27, a first bush 2, a first bush 22, and a second bush 21 are sequentially installed. The first bush 22 is provided with a shuttle valve 4, The ...

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Abstract

The invention provides a function control valve for a support rod actuating cylinder of a landing gear. The function control valve integrates the functions of a hydraulic lock and the oil compensation function. When the landing gear is landed, the function control valve can switch an oil way of the support rod actuating cylinder into a differential connection oil way automatically under the action of hydraulic oil, so that quick landing of the landing gear is achieved; when the landing gear is landed in place, the function control valve can automatically lock an oil return way of the support rod actuating cylinder so that the support rod actuating cylinder can bear a load acting on the landing gear; when the landing gear is retracted, the hydraulic lock is unlocked through a hydraulically-controlled piston to make the oil return way of the support rod actuating cylinder smooth, so that the landing gear is normally retracted. According to the function control valve, functional coordinative integrated design is conducted on the hydraulic lock and an oil compensation device, and corresponding hydraulic driving functional cavities are formed in a valve body respectively, so control over the functional status of the support rod actuating cylinder of the landing gear can be achieved, the structure of a hydraulic system is simplified, space is saved, and the weight of the system is reduced.

Description

technical field [0001] The invention relates to a landing gear strut actuating cylinder, in particular to a landing gear strut actuating cylinder function control valve, which can be applied to hydraulic valves with strict requirements on space layout and weight control, and with hydraulic lock function and oil compensation function. Systems, such as hydraulic systems for aircraft landing gear, transmissions, etc. Background technique [0002] The functions of the landing gear strut actuator are: 1. When the landing gear is lowered, the landing gear is locked through the built-in locking mechanism of the actuator, so that the landing gear can bear the ground load; 2. Drive the landing gear under the action of hydraulic pressure. retract. With the continuous improvement of the reliability requirements of the landing gear of modern aircraft, it is generally necessary to set the hydraulic lock in addition to the mechanical lock in the strut actuator, so that the mechanical loc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02
CPCF15B13/02
Inventor 禹新鹏邓晓山张航舟慕建全孟清河金军关维鲁德发
Owner LANDING GEAR ADVANCED MFG
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