Blade Ring Removal Force Redirection for Smooth Circumferential Extraction
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Solution Overview
Problem
Existing blade removal devices face difficulties in smoothly removing blades from a blade ring when the towing force direction does not coincide with the circumferential direction, requiring adjustments to the towing unit or hydraulic cylinder's position.
Innovation Solution
A blade removal device with a first turning part attached to the blade ring to change the direction of the towing force, ensuring it aligns with the circumferential direction, and additional turning parts to further optimize the force direction and movement efficiency, including a frame and support structure to manage loads and improve alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the towing part is positioned at a fixed location, then the device structure is simple, but the blade cannot be smoothly removed when the towing force direction does not coincide with the circumferential direction
Solution Approach 1:
A guide rail is introduced as an intermediary component between the towing part and the blade. The guide rail receives the towing force from the towing part and transmits it to the blade in the correct circumferential direction, enabling smooth blade removal even when the towing part is positioned at a fixed location. This mediator resolves the directional mismatch without requiring the towing part to move.
Solution Approach 2:
The force transmission path is segmented into two independent functional components: the towing part that generates force and the guide rail that directs force. This segmentation allows the towing part to remain stationary while the guide rail ensures the force is applied in the correct circumferential direction along the groove, solving the contradiction between fixed positioning and operational effectiveness.
2Ease of operation
If the towing part position is shifted in response to blade movement, then smooth blade removal is achieved, but the operation becomes complex and time-consuming
Solution Approach 1:
The guide rail serves as a stationary intermediary that eliminates the need for position adjustments. It continuously guides the towing force in the correct circumferential direction regardless of the blade's position, thereby eliminating the time loss associated with moving the towing part while maintaining smooth blade removal.
Solution Approach 2:
The guide rail is designed to work with the dynamic movement of the blade along the groove. As the blade moves, the guide rail continuously provides the appropriate directional guidance for the towing force, adapting to the blade's position without requiring active repositioning of the towing part.
3Productivity
If the towing force direction is not aligned with the circumferential direction, then the device can be simpler, but the blade removal becomes difficult and inefficient
Solution Approach 1:
The guide rail acts as a force direction mediator that converts towing force from any direction into the correct circumferential direction. This intermediary component ensures high blade removal efficiency by guaranteeing proper force alignment without adding complex active control mechanisms to adjust the towing part's position or orientation.
Data Source
AI summary
A blade removal device for removing a blade in a circumferential direction of a blade ring along a groove, the blade being engaged with the groove extending in the circumferential direction on an inner peripheral side of the blade ring, is provided with a towing part for towing the blade, a string member connecting the towing part and the blade, and a first turning part attached to the blade ring so as to be in contact with a portion of the string member between the towing part and the blade to change a direction of a towing force transmitted via the string member.