Pipe Joint Watertightness Testing with Foldable Rod Supports
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Solution Overview
Problem
The existing watertightness testing devices face issues with the downward deflection and potential damage of the moving operation rod due to its weight, which requires external support, hindering pipe-joining operations.
Innovation Solution
Incorporating a main supporting member with a rotatable main rolling member that can switch between a supporting posture outside the pipes and a folded posture inside, and an auxiliary supporting member with a rotatable auxiliary rolling member inside the pipes, to prevent deflection and damage of the moving operation rod during pipe joining and testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the moving operation rod is made long to operate the testing device body inside the pipes, then the operating reach is improved, but the rod becomes susceptible to downward deflection due to its own weight
Solution Approach 1:
A support table is introduced as an intermediary structure to support the moving operation rod at multiple positions along its length. The support table acts as a mediator between the rod and the ground, preventing the rod from deflecting under its own weight while allowing it to maintain its long length for operating the testing device body inside the pipes.
2Stability of the object's composition
If the support table is added to support the moving operation rod, then the stability of the rod is improved, but the support table becomes a hindrance to pipe-joining work
Solution Approach 1:
The support table is designed with movable and adjustable characteristics, allowing it to be dynamically repositioned or removed from the working area. The support table can be moved along the pipes or adjusted in height and position, enabling it to provide necessary support to the moving operation rod while clearing the way for pipe-joining operations when needed.
3Stability of the object's composition
If the moving operation rod is supported externally, then the rod stability is improved, but the complexity of the overall system increases
Solution Approach 1:
The support table is designed to serve multiple functions: it supports the moving operation rod, provides a platform for operators, and can be repositioned to accommodate different working conditions. This multi-functionality reduces the need for additional separate support structures, thereby minimizing the increase in system complexity while maintaining rod stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for the prevention of moving operation rod deflection and damage, facilitating smoother pipe joining and watertightness testing without external support hindrances, ensuring efficient operation and reducing the risk of damage.
Implementation Method 1
the main supporting member has a rotatable main rolling member in a lower end section, and the auxiliary supporting member has a rotatable auxiliary rolling member in a lower end section
Data Source
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AI summary
A watertightness testing device (1) for testing the watertightness of a section where pipes (2, 3) are joined together, the watertightness testing device (1) comprising a testing device body (21) and a movement operation rod (22) that is for moving, from outside the end of a pipe, the testing device body (21), which is inside the pipe, the testing device body (21) being moved in the pipe axis direction (B), wherein the movement operation rod (22) is provided to the testing device body (21) and extends in the pipe axis direction (B), main support members (61, 62) which support the movement operation rod (22) outside the pipe (2) are provided to the movement operation rod (22), and the main support members (61, 62) each have at the lower end thereof a main rotation member (75) which freely rotates, can each be switched between a support position (K) for supporting the movement operation rod (22) outside the pipes and a folded position for being folded in the pipes, and are each biased toward the support position (K) from the folded position.