CN-117733790-B - Method for disassembling and assembling torsion tube of aircraft pedal

CN117733790BCN 117733790 BCN117733790 BCN 117733790BCN-117733790-B

Abstract

The invention is suitable for the technical field of torsion tube disassembly and assembly, and provides a method for disassembling and assembling an aircraft pedal torsion tube. The torsion tube is assembled and disassembled by moving the inner tube towards the first bushing, cutting off the part of the inner tube exposed out of the outer tube through the first bushing, moving the inner tube towards the second bushing, enabling at least part of the inner peripheral wall of the first bushing to be exposed out of the inner tube, fixedly connecting the plug in the first bushing, applying force to the plug, separating the plug and the first bushing from the outer tube together, taking out the inner tube, fixedly connecting the plug in the second bushing, applying force to the plug, and separating the plug and the second bushing from the outer tube together. According to the invention, the inner tube is partially cut off by utilizing the matching structure of the outer tube and the inner tube, so that the first bushing is exposed out of the inner tube, the plug is arranged to be fixed with the first bushing, the force application point of the first bushing is increased, an operator can conveniently separate the plug and the first bushing from the outer tube together, the disassembly of the torsion tube is completed under the condition that the outer tube structure is not damaged, and the replacement cost of the torsion tube is reduced.

Inventors

ZHAO CHENDI
YANG ZHAOJUN
LONG XIAOHUI
SUN YI
LUO BO
YI SIYUN
GOU JIANGHONG

Assignees

中国民用航空飞行学院

Dates

Publication Date: 20260508
Application Date: 20231208

Claims (6)

1. A method for disassembling and assembling torsion tubes of aircraft pedals is characterized in that, The torsion tube includes outer tube, inner tube, and fixes first bush and the second bush in the outer tube, the outer tube cover is established outside the inner tube, the inner tube both ends pass respectively first bush with the second bush expose in the outer tube, the external diameter at the middle part of inner tube is greater than first bush with the internal diameter of second bush, the dismouting step of torsion tube includes: S1, moving an inner tube towards a first bushing, and cutting off the part of the inner tube exposed out of an outer tube through the first bushing; S2, moving the inner tube towards the second bushing, so that at least part of the inner peripheral wall of the first bushing is exposed out of the inner tube; S3, fixedly connecting a plug in the first bushing; S4, applying force to the plug, separating the plug and the first bushing from the outer tube, and taking out the inner tube; s5, fixedly connecting a plug in the second bushing; S6, applying force to the plug, and separating the plug and the second bushing together from the outer tube; In the step S4, a plunger rod is used for inserting the end part of the inner tube far away from the first lining into the inner tube, pushing the plug, and pushing the plug and the first lining out of the outer tube; in the step S6, a plunger is inserted into the outer tube from the end of the outer tube far away from the second bushing to push the plug and the second bushing out of the outer tube; in the step S4 and the step S6, before pushing the plugs by using the plunger, a part of the plugs exposed out of the first bushing or the second bushing is placed in the disassembly bushing, the disassembly bushing is provided with a mounting hole for accommodating the plugs, the inner diameter of the mounting hole is larger than the outer diameters of the first bushing and the second bushing, and the end part of the outer tube, which is close to the plugs, is in abutting fit with the disassembly bushing; The disassembly lining cylinder is characterized in that the disassembly lining cylinder is further provided with a mounting groove, the radial size of the mounting groove is larger than that of the mounting hole, the mounting groove is sleeved outside the mounting hole and communicated with the mounting hole, and the bottom wall of the mounting groove is used for being abutted to the end part of the outer tube, which is close to the plug.
2. The method for assembling and disassembling the torsion tube of the aircraft foot rest according to claim 1, wherein, In the step S3, the inner peripheral wall of the first bushing is tapped, and the plug is screwed into the first bushing; In the step S5, the inner peripheral wall of the second bushing is tapped, and the plug is screwed into the second bushing.
3. The method for assembling and disassembling the torsion tube of the aircraft foot rest according to claim 2, wherein, The plug is provided with a threaded portion connected with the first bushing or the second bushing, and one end portion of the plug is provided with an assembly groove which is used for being matched with a spanner.
4. The method for assembling and disassembling the torsion tube of the aircraft foot rest according to claim 1, wherein, In the step S4 and the step S6, before the plunger is used to push the plug, the outer tube is vertically placed on the surface of the console, and the detachable lining support is arranged between the console and the torsion tube.
5. The method for assembling and disassembling the torsion tube of the aircraft foot rest according to claim 1, wherein, In the step S4, the plug is fixed with the plug by using a tension piece, and the tension piece is pulled to pull the plug and the first bushing out of the outer tube; in the step S6, the plug is fixed with the plug by using a tension member, and the tension member is pulled to pull the plug and the second bushing out of the outer tube.
6. The method for assembling and disassembling the torsion tube of the aircraft foot rest according to claim 1, wherein, In the step S2, it is determined whether the inner peripheral wall of the first bushing is exposed to the inner tube, if yes, step S3 is executed, and if no, step S1 is returned.

Description

Method for disassembling and assembling torsion tube of aircraft pedal Technical Field The invention belongs to the technical field of torsion tube disassembly and assembly, and particularly relates to a method for disassembling and assembling an aircraft pedal torsion tube. Background The general fixed wing aircraft basically adopts a torsion tube assembly to realize the control and linkage of a left seat pilot and a right seat pilot on a brake and a rudder. Because the aircraft runs throughout the year, the aircraft takes off and land frequently and the alternating stress of the inner tube connection brake actuator is great, the two ends of the inner tube of the pedal torsion tube are easy to crack, but the whole torsion tube assembly can only be replaced because the assembly and the disassembly are impossible. However, because of the high manufacturing costs of pedal torsion tube assemblies, current U.S. original factory single piece aircrafts cost approximately $5000, and the overall assembly costs approximately $6000, resulting in excessive replacement costs for torsion tube assemblies. Disclosure of Invention The invention aims to provide a method for disassembling and assembling a torsion tube of an aircraft pedal, which solves the technical problems in the prior art. The invention is realized in the following way: The application provides a method for disassembling and assembling a torsion tube of an aircraft pedal, which comprises an outer tube, an inner tube, a first bushing and a second bushing, wherein the first bushing and the second bushing are fixed in the outer tube, the outer tube is sleeved outside the inner tube, two ends of the inner tube respectively penetrate through the first bushing and the second bushing and are exposed out of the outer tube, the outer diameter of the middle part of the inner tube is larger than the inner diameters of the first bushing and the second bushing, the disassembly and assembly step of the torsion tube comprises the steps of S1, moving the inner tube towards the first bushing, cutting off the part of the inner tube which penetrates through the first bushing and is exposed out of the outer tube, S2, moving the inner tube towards the second bushing, enabling at least part of the inner peripheral wall of the first bushing to be exposed out of the inner tube, S3, fixedly connecting a plug in the first bushing, S4, exerting force to the plug and the outer tube, fixedly connecting the plug in the second bushing, and S6, exerting force to separate the plug and the second bushing together with the outer tube. The beneficial effects of the invention are as follows: According to the invention, the part of the inner pipe exposed to the outer pipe is cut by utilizing the matching structure of the inner pipe and the outer pipe, so that at least part of the inner peripheral wall of the first bushing positioned between the inner pipe and the outer pipe is exposed to the inner pipe, the inner peripheral wall of the first bushing is convenient to process, the plug is fixedly connected in the first bushing, the force application point of the first bushing is increased, the plug is separated from the outer pipe by applying force to the plug, and the first bushing is fixedly connected with the plug, so that the first bushing is separated from the outer pipe while the plug is separated from the outer pipe, the constraint of the first bushing on the inner pipe is released, and the inner pipe can be taken out from the outer pipe to finish the disassembly of the inner pipe. And (3) fixing the second bushing by using the plug and the second bushing, and removing the second bushing. The whole disassembly process has no damage to the outer pipe, and only the new bushing and the new inner pipe need to be replaced later, so that the replacement cost of the torsion pipe is greatly reduced. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the embodiments of the present invention or the drawings used in the description of the prior art, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art. FIG. 1 is a flow chart of a method of disassembly and assembly provided by some embodiments of the present application; FIG. 2 is a schematic illustration of the structure of a torsion tube provided in some embodiments of the present application; FIG. 3 is a cross-sectional view of a torsion tube provided by some embodiments of the present application; FIG. 4 is a flowchart illustrating the assembly and disassembly of a torsion tube according to some embodiments of the present application; FIG. 5 is a second flowchart illustrating the assembly and disassembly of a torsion tube according to some embodiments of the present app