Insertion Apparatus Controller Rotation Direction Limiting
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Solution Overview
Problem
Existing rotary self-propelled insertion apparatuses lack a mechanism to ensure safe and controlled operation during inspection, particularly in preventing unintended insertion or removal directions, which can lead to errors or damage.
Innovation Solution
An insertion apparatus with a rotational housing, a motor-driven spiral fin, and a controller that limits the rotational direction to allow only removal when inspection control is initiated, ensuring safe operation by preventing insertion during inspection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the motor is allowed to rotate in both insertion and removal directions during inspection, then the inspection completeness is improved, but the safety and risk of unintended insertion is worsened
Solution Approach 1:
The controller pre-establishes a restriction rule that prevents the motor from rotating in the insertion direction during inspection mode. This preliminary anti-action blocks the harmful effect before it can occur, while still allowing removal direction rotation for complete inspection. The controller judges inspection mode activation and automatically limits rotational direction to prevent unintended insertion.
2Reliability
If the controller restricts motor rotation to removal direction only during inspection, then the safety is improved, but the inspection capability in insertion direction is worsened
Solution Approach 1:
The system dynamically adjusts motor rotation restrictions based on operational mode. During inspection mode, the controller permits removal direction rotation for safety while blocking insertion direction. When inspection is complete and normal operation is requested, the restriction is lifted and both directions are permitted. This dynamic adaptation resolves the contradiction between safety and inspection capability.
3Productivity
If the motor rotates at high speed during inspection, then the inspection efficiency is improved, but the risk of damage and operational safety is worsened
Solution Approach 1:
The controller changes the rotational speed parameter based on operational mode. During inspection mode, the motor rotates at a first (lower) speed to ensure safety and prevent damage. When normal operation is activated, the speed increases to a second (higher) speed for efficient insertion. This parameter adaptation resolves the contradiction between inspection efficiency and safety.
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 ensures safe and controlled operation by preventing unintended insertion during inspection, reducing the risk of errors and damage, and efficiently managing the insertion and removal processes.
Implementation Method 1
the fin formed to the rotating cylinder is brought into contact with an inner wall of a lumen, and generates stress. The insertion section self-propels in an insertion direction or in a removal direction by the stress.
Implementation Method 2
the fin formed on an outer peripheral surface of the rotational housing as a spiral shape, and arranged to allow the insertion section to move in an insertion direction... along with rotation of the rotational housing
Data Source
AI summary
An insertion apparatus includes an insertion section, a rotational housing, a motor, and a controller. The motor rotates the rotational housing. The controller designates a rotational direction of the motor. The controller limits the rotational direction of the motor to allow the insertion section to move only in a removal direction when inspection control for inspecting an operation relative to an insertion direction of the insertion section is initiated.