Reaction Force Measuring Device for Hose Degradation Diagnosis
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Solution Overview
Problem
Conventional bending reaction force measuring devices require cutting a part of the hose to measure the reaction force, which is not feasible for hoses forming flow paths in construction machines and factory equipment, especially when these hoses are connected and in use.
Innovation Solution
A reaction force measuring device with a receiving portion and a movable portion that forms a sandwiching space, allowing the hose to be inserted and measured without cutting, using a load cell to measure the reaction force applied in a stepwise manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional bending reaction force measuring device is used to measure the reaction force of a hose, then the reaction force can be measured, but the hose must be cut into a test hose with both ends fixed, which is not feasible for hoses forming flow paths in construction machines and factory equipment
Solution Approach 1:
The invention extracts only the necessary measurement function from the conventional bending reaction force measuring device. Instead of requiring the entire hose to be cut and prepared as a test specimen, the device now only needs to measure the reaction force at the specific location where the hose is pressed, allowing measurement on hoses that remain installed and functional in construction machines and factory equipment.
Solution Approach 2:
The measuring device is designed to be universally applicable to hoses in their actual installed state. By measuring the reaction force generated when the hose is pressed during normal operation, the device can diagnose hose degradation without requiring special test preparation, making it suitable for both maintenance and predictive maintenance scenarios.
2Measurement precision
If both ends of the hose are fixed on movable carriages to measure bending reaction force, then the measurement can be performed, but the hose must be cut and prepared as a test hose, which is impractical for in-use hoses
Solution Approach 1:
The invention extracts only the essential measurement capability from the complex bending reaction force measuring setup. Instead of requiring the hose to be mounted on movable carriages with both ends fixed, the device simply presses against the hose at the measurement location and records the reaction force, enabling operation on hoses that remain installed in their normal positions.
Solution Approach 2:
The pressing operation serves as an intermediary action that generates the necessary reaction force without requiring the hose to be mounted on movable carriages. By pressing the hose and measuring the generated reaction force, the device obtains measurement data while the hose remains in its installed state, connected to the construction machine or factory equipment.
3Measurement precision
If a hose is cut to prepare a test hose for measurement, then the reaction force can be measured under controlled conditions, but the flow path is disrupted and the hose cannot remain in service
Solution Approach 1:
The invention extracts only the measurement function from the test hose preparation process. Instead of cutting the hose to create a test specimen, the device measures the reaction force at the location where the hose is pressed during normal operation, allowing the hose to remain intact and maintain its flow path continuity while still enabling degradation diagnosis.
Solution Approach 2:
The pressing operation acts as an intermediary that enables measurement without disrupting the flow path. By pressing the hose and measuring the reaction force generated, the device obtains degradation information while the hose remains connected and functional, maintaining both measurement capability and flow path continuity.
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
Enables the measurement of reaction forces in hoses forming flow paths without cutting the hose, facilitating on-site degradation diagnosis and predicting the remaining life of the hose.
Implementation Method 1
a measuring portion configured to measure a reaction force of the hose sandwiched in the sandwiching space generated when the hose is pressed and applied with a load as the movable portion moves toward the receiving portion
Data Source
AI summary
Provided is a reaction force measuring device comprising: a receiving portion 12; a movable portion 13 arranged in a manner spaced from the receiving portion 12 and capable of moving toward the receiving portion 12, the movable portion having a sandwiching space a formed between itself and the receiving portion 12, into which sandwiching space a hose H can be inserted from a direction crossing a longitudinal direction of the hose; and a measuring portion 14 configured to measure a reaction force of the hose H generated when the hose is pressed and applied with a load as the movable portion 13 moves toward the receiving portion 12.