Rotatable Front Frame for Thrust Reverser Assembly
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Solution Overview
Problem
The existing methods for assembling O-shaped thrust reversers are complex, costly, and difficult due to the need for frequent frame reversals, extensive use of handling tools, and congestion in the assembly area, leading to inappropriate postures for operators and increased manufacturing costs.
Innovation Solution
A device comprising a framework with a rotatable support element and positioning assembly that allows the front frame to be immobilized and accessed easily from either side, reducing congestion and simplifying the assembly process by enabling the front frame to be positioned optimally for equipment installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the front frame is disposed horizontally on a handling table for assembling equipment, then the various equipment can be assembled on the front frame, but frequent reversals of the front frame are required to gain access to either side, which complicates the assembling process and increases device complexity
Solution Approach 1:
The front frame is made rotatable about a vertical axis through 180 degrees, allowing it to dynamically change orientation from horizontal to vertical position. This dynamic adjustment enables operators to access either side of the frame without requiring complex handling tools or frequent reversals, as the frame can be rotated into the optimal working position.
Solution Approach 2:
The invention introduces a vertical dimension to the assembling process by rotating the front frame about a vertical axis. This transforms the assembly approach from a two-dimensional horizontal table surface to a three-dimensional space where the frame can be positioned at different angles, eliminating the need for bridges and scaffolds.
2Ease of operation
If bridges and scaffolds are disposed to access the center of the front frame, then the various equipment can be assembled, but the assembling area becomes significantly congested
Solution Approach 1:
The rotatable front frame allows operators to bring the workpiece to them rather than requiring them to reach over congested areas. By rotating the frame to a vertical or angled position, operators can access the center and sides of the frame from convenient positions without requiring bridges and scaffolds, thus eliminating assembling area congestion.
3Ease of manufacture
If the front frame is assembled horizontally on a handling table, then the equipment can be mounted, but operators are forced into inappropriate postures which reduces productivity and increases difficulty
Solution Approach 1:
The rotatable front frame enables operators to adjust the frame's orientation to maintain ergonomic postures during assembly. Operators can rotate the frame to positions that allow them to work at comfortable heights and angles, eliminating inappropriate postures and reducing assembling difficulty, thereby improving productivity.
Data Source
AI summary
An assembly device includes a framework resting on a planar support, a support element mounted movably in rotation relative to the framework, an immobilizing device, and a positioning assembly mounted in rotation on the support element. A front frame of the fixed structure is positioned on the positioning assembly, and the immobilizing device is arranged to immobilize the front frame on the positioning assembly. In particular, the assembly device allows, in the immobilizing position on the positioning assembly, for the front frame to extend transversely to the planar support.