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Multifunctional undercarriage jackstay device

A landing gear and rod device technology, which is applied to the chassis and other directions, can solve the problems of short working life, low reliability, and low retracting and retracting efficiency, and achieve the effect of reliable operation and hydraulic energy saving

Active Publication Date: 2015-02-18
LANDING GEAR ADVANCED MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although the structural form of this integrated design has been applied at home and abroad, there are many shortcomings, such as due to the backward design structure, some functions cannot be integrated, or there are short working life, low reliability, low retractable efficiency, etc. question

Method used

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  • Multifunctional undercarriage jackstay device
  • Multifunctional undercarriage jackstay device
  • Multifunctional undercarriage jackstay device

Examples

Experimental program
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Effect test

Embodiment Construction

[0032] A multifunctional undercarriage strut device, such as figure 1 As shown, the strut device is composed of an actuator assembly, a function control valve assembly, a cross oil joint assembly, a hydraulic conduit and related connectors.

[0033]The function control valve assembly of the strut device is connected to the actuator assembly through four screws 15, and the cross oil circuit composed of elbow joint 10, universal joint 11, straight pipe joint 12, bolt 13 and earring bolt 14 The joint assembly is installed on the upper end cover 9 of the cylinder assembly. The hydraulic oil circuits of the actuator assembly and the function control valve assembly are connected through steel conduits 2, 3, 4, and 5.

[0034] When the brace device is in use, the clevis joint 1 is connected with the landing gear pillar, and the clevis bolt 14 is connected with the aircraft body. The fully extended state of the piston rod of the actuator corresponds to the lowered position of the l...

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Abstract

The invention discloses a multifunctional undercarriage jackstay device which comprises an actuator cylinder assembly and a function control valve assembly, wherein the actuator cylinder assembly comprises a cylinder body, a piston and a piston rod; a down lock elastic jack catch is mounted on the left end face of the piston; a movable piston is arranged on the left side of the movable piston; a clamping groove is formed in the movable piston; the clamping groove can be matched with the down lock elastic jack catch for locking to form a down lock mechanism; an up lock elastic jack catch which is mounted on the cylinder body is arranged on the right side of the piston; a locking lining is fixed in the piston; a small movable piston is mounted in the piston rod; an elastic element is arranged between the left end of the small movable piston and the piston rod; the locking lining, the small movable piston and the up lock elastic jack catch are matched for locking to form an up lock mechanism. According to the multifunctional undercarriage jackstay device, convenience is brought to the structural space distribution of undercarriages, the overall structural weights of the undercarriages are lightened, and the problem that the existing structures are lack of function integration, short in service life, low in reliability and low in landing efficiency is solved.

Description

technical field [0001] The invention relates to a multifunctional landing gear brace device, which belongs to the field of aircraft landing gear systems and can be applied to small and medium-sized aircraft landing gears or unmanned aerial vehicle landing gear systems. Background technique [0002] Retractable aircraft landing gear is generally composed of functional units such as pillars, wheels, strut mechanisms, retractable drive mechanisms, upper locks, and related connectors. For the landing gear of small and medium-sized aircraft, due to the characteristics of low load-carrying capacity requirements, small structural space, and strict weight restrictions, the strut mechanism, retractable drive mechanism, up and down position locking mechanism and some control functions of the landing gear are integrated and designed It is a development trend. At present, although the structural form of this integrated design has been applied at home and abroad, there are many shortcom...

Claims

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Application Information

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IPC IPC(8): B64C25/22
Inventor 邓晓山张航舟孟清河慕建全关维金军鲁德发禹新鹏
Owner LANDING GEAR ADVANCED MFG
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