Aircraft Engine Linking Device Double Stop Assembly
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Solution Overview
Problem
The existing linking devices for aircraft engines and pylons face difficulties in precisely positioning and adjusting the upper and lower stops for limiting the travel of the spreader, which is time-consuming and requires repeated adjustments during assembly and disassembly of thrust rods.
Innovation Solution
A linking device with a double stop system where the upper and lower stops are integrated into a single part, secured by a tie rod and ring system, allowing for precise spacing during manufacturing rather than in situ adjustment, and featuring a cylindrical body with coaxial flanges for enhanced stability and ease of assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate upper and lower stops are used with adjustment spacers for positioning, then the travel limit of the spreader can be adjusted, but the assembly process becomes time-consuming and requires repeated adjustments
Solution Approach 1:
The patent combines the upper stop and lower stop into a single integrated double stop component. This merging eliminates the need for separate adjustment spacers and reduces the number of parts, allowing the travel limit to be set during manufacturing rather than adjusted during assembly, thereby significantly reducing assembly time while maintaining the ability to control spreader travel
Solution Approach 2:
The double stop is pre-positioned and fixed in a specific orientation during manufacturing using a tie rod and ring system. This preliminary action of setting the correct position during production eliminates the need for time-consuming in-situ adjustments during assembly and disassembly operations
2Manufacturing precision
If separate stops with adjustment spacers are used, then positioning precision can be achieved, but the complexity of assembly and disassembly increases
Solution Approach 1:
By merging the upper and lower stops into a single double stop component, the patent reduces the total number of parts while maintaining positioning precision. The integrated design eliminates the need for multiple adjustment spacers and simplifies the overall assembly structure
Solution Approach 2:
The double stop serves multiple functions simultaneously: it limits both upper and lower travel of the spreader, provides precise positioning, and integrates the functions of two separate stops into one universal component that simplifies the overall system
3Adaptability or versatility
If multiple separate components (stops and spacers) are used, then adjustment flexibility is provided, but the risk of wedging and assembly errors increases
Solution Approach 1:
The integration of upper and lower stops into a single double stop component eliminates the gaps and interfaces between separate parts that could cause wedging. The unified structure ensures reliable positioning without the risk of component misalignment or wedging between multiple separate parts
Solution Approach 2:
The tie rod and ring system act as intermediaries to securely connect and position the double stop components. This intermediary mechanism ensures proper alignment and fixation during assembly, preventing assembly errors and ensuring reliable positioning without direct contact between multiple adjustable components
Data Source
AI summary
A linking device connecting an aircraft engine and a primary structure of an aircraft pylon, comprising a support connected to the primary structure, a spreader having a central part connected to the support and a first and a second end that are connected to thrust rods, at least one limiting system for limiting the travel of the spreader having an upper and a lower stop between which is positioned the first or second end of the spreader, the upper and the lower stop being connected to one another so as to form a single part connected to a fitting secured to the support.