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Lifting mechanism and lifting method for aircraft landing gear

A technology of aircraft landing gear and lifting mechanism, applied in aircraft parts, ground installations, transportation and packaging, etc., can solve problems such as affecting airport scheduling, occupying runways, and unable to achieve aircraft movement, saving manpower, facilitating installation, and facilitating moving effect

Inactive Publication Date: 2017-04-26
CHANGZHOU KEHONG ELECTRONICS DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the aircraft is on the runway, directly performing maintenance on the runway will occupy the runway for a long time, affecting airport scheduling, and when the landing gear fails, the aircraft cannot be moved.

Method used

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  • Lifting mechanism and lifting method for aircraft landing gear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, an aircraft landing gear lifting mechanism includes a base 101 and a housing 102 fixedly connected to the top of the base 101. The middle part of the housing 102 is a hollow cavity, and a support block is arranged in the housing 102. 103, the support blocks 103 are 4 pieces respectively arranged in the four corners of the housing 102, compression springs 104 are arranged between the 4 support blocks 103, and 4 pieces are arranged on the housing 102 Hydraulic cylinder 105, the telescoping rods of 4 described hydraulic cylinders 105 are respectively connected with 4 described support blocks 103, and described support block 103 is provided with wedge-shaped surface, and the wedge-shaped of 4 described support blocks 103 The surfaces are all facing the central axis of the housing 102, and the surfaces of the support block 103 opposite to the wedge-shaped surface are respectively attached to the inner walls of the base 101 and the housing 102, and ...

Embodiment 2

[0036] The invention also discloses a landing gear lifting method, comprising the following steps:

[0037] S1: use a jack to jack up the landing gear so that the height of the bottom of the tire of the landing gear is higher than the bottom of the groove 107;

[0038] S2: Move the base 101: move the base 101 through the universal wheels 106, place the tires of the landing gear in the groove 107, continue to push the base 101, and withdraw the jack, so that the tires of the landing gear are completely placed in the casing 102;

[0039] S3: Start the hydraulic cylinder 105 at the rear of the support block 103, so that the telescopic rod of the hydraulic cylinder 105 pushes the support blocks 103 on both sides of the housing 102 to move towards each other, and the support block 103 lifts the landing gear tires, so that the landing gear tires are completely fixed at 4 The central concave part formed by a support block 103;

[0040]S4: Fixed landing gear tires: when the height re...

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PUM

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Abstract

The invention discloses a lifting mechanism for an aircraft undercarriage. The lifting mechanism comprises a base and a casing fixedly connected to the upper part of the base, wherein the middle part of the casing is a hollow cavity; four supporting blocks are arranged in the casing and respectively arranged at four vertex angles in the casing; compression springs are arranged among the four supporting blocks; four hydraulic cylinders are arranged on the casing; telescoping rods of the four hydraulic cylinders are respectively connected with the four supporting blocks; a wedge-shaped surface is arranged on each supporting block; the wedge-shaped surfaces of the four supporting blocks face the central axis of the casing; the surfaces which are adjacent to the wedge-shaped surface, of each supporting block, are respectively attached to the base and the inner wall of the casing; four universal wheels are arranged at the lower part of the base; a groove is formed in the middle part of a side wall of the casing, and the bottom of the groove is higher than the supporting blocks. The invention further discloses a lifting method. The lifting mechanism disclosed by the invention can be used for lifting the aircraft undercarriage, and can offer convenience for an aircraft to move by utilizing the universal wheels at the lower part of the base instead of the undercarriage.

Description

technical field [0001] The invention relates to the field of aircraft maintenance equipment, in particular to an aircraft landing gear lifting mechanism and a lifting method. Background technique [0002] Aircraft landing gear is an accessory device used to support the aircraft and move on the ground (or water surface) when the lower part of the aircraft is used for takeoff and landing or ground (or water) taxiing. The landing gear is the only part that supports the entire aircraft, so it is an integral part of the aircraft; without it, the aircraft cannot move on the ground. After the aircraft takes off, the landing gear can be retracted depending on the performance of the aircraft. [0003] When the undercarriage breaks down, in order to avoid accidents, when it needs to be repaired, the existing method usually uses a jack to support it, and then further repairs. However, when the aircraft is on the runway, directly performing maintenance on the runway will occupy the ru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64F1/22
Inventor 上官秋玉
Owner CHANGZHOU KEHONG ELECTRONICS DEVICES