Elastic Support Probe Mounting for Rotary Shafts
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Solution Overview
Problem
The existing probe device configurations for rotary machines, such as steam turbines, face issues where the mounting tool can be damaged due to excessive tightening, requiring labor-intensive torque control to prevent damage.
Innovation Solution
A probe device with a probe holding member that includes a guide sleeve and elastic support members, allowing the second end to be stably fixed without a nut, using elastic support members to connect the probe holding member to the guide sleeve, reducing the risk of damage and labor in mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the nut is tightened to securely fix the mounting tool, then the fixing reliability is improved, but the mounting tool may be broken or damaged due to excessive tensile force
Solution Approach 1:
The elastic support member acts as an intermediary between the mounting tool and the guide cylinder. It transmits the fixing force while absorbing excess tension, preventing direct transmission of damaging forces to the mounting tool while maintaining secure fixation.
Solution Approach 2:
The elastic support member changes its physical state (elastic deformation) in response to applied force. By utilizing the material's elastic properties, the system automatically adjusts the force transmission, allowing secure fixation without exceeding the mounting tool's strength limits.
2Strength
If the tightening torque of the nut is strictly controlled to prevent damage, then the mounting tool damage is suppressed, but the labor for mounting work increases
Solution Approach 1:
The elastic support member provides self-regulating force distribution. It automatically adjusts to the appropriate tension level based on its elastic properties, eliminating the need for external control mechanisms or strict torque specifications, thereby reducing mounting complexity and time.
Solution Approach 2:
The elastic support member is a simple, inexpensive component that replaces complex torque control mechanisms. While it may deform or wear over time, its low cost and simplicity make it economically advantageous compared to precision torque control systems.
3Stability of the object's composition
If the mounting tool is securely fixed using a nut, then the positional stability is improved, but the complexity of the mounting structure increases
Solution Approach 1:
The elastic support member functions as a flexible element that provides both support and positioning. Its elastic nature allows it to maintain positional stability while accommodating minor misalignments and vibrations, replacing rigid complex mounting structures with a simpler flexible solution.
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
The solution effectively suppresses damage to the probe device while minimizing the increase in labor for mounting work, providing a stable and secure attachment without the need for excessive tightening.
Implementation Method 1
a plurality of elastic support members disposed at an interval in an extending direction of the probe holding member connecting the first end and the second end to each other between the second end of the probe holding member and an inner peripheral surface of the guide sleeve and formed of an elastic material
Data Source
AI summary
A probe device includes a probe that detects a state of a rotary shaft, a probe holding member having a first end fixed to a bearing portion, in which the probe is fixed to the first end, a cylindrical guide sleeve inserted into a communication hole of a casing, a second end of the probe holding member being inserted into the cylindrical guide sleeve, and a plurality of elastic support members disposed at an interval in an extending direction of the probe holding member between the second end of the probe holding member and an inner peripheral surface of the guide sleeve, and formed of an elastic material to form an annular shape extending along an outer peripheral surface of the probe holding member.