Multi-bolt Flange Loosening Test Machine with Compound Loading
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Solution Overview
Problem
Current bolt loosening test machines are inadequate for accurately simulating the complex load conditions of multi-bolt flange structures, as they primarily apply single load types and fail to effectively assess the anti-looseness properties of bolts under compound loading conditions.
Innovation Solution
A multi-bolt loosening test machine with axial and transverse load transmission parts, incorporating a hydraulic puller for axial tension and an eccentric coupling system for transverse bending, allowing for compound loading simulations that isolate and display loads in real-time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-bolt test machine is used, then the device complexity is low, but the adaptability to multi-bolt flange structures is insufficient
Solution Approach 1:
The test machine divides the multi-bolt flange structure into individual bolt test positions, with each bolt being tested independently while maintaining the flange geometry. This allows the complex multi-bolt structure to be analyzed through segmented single-bolt tests, resolving the contradiction between maintaining structural fidelity and simplifying the testing apparatus.
Solution Approach 2:
The test machine is designed with universal fixtures and loading mechanisms that can accommodate different flange configurations and bolt arrangements. The same basic apparatus can test various multi-bolt structures by adjusting fixtures and loading parameters, providing multi-functionality without requiring separate complex machines for each configuration.
2Adaptability or versatility
If single load type testing is applied, then the measurement precision for specific load conditions is high, but the adaptability to compound loading conditions deteriorates
Solution Approach 1:
The compound loading system is segmented into independent axial loading and transverse loading subsystems. Each subsystem can be controlled and measured separately, allowing precise measurement of individual load components while maintaining the capability to apply complex compound loading conditions through coordinated operation of both subsystems.
Solution Approach 2:
The test machine extends from single-axis loading to multi-axis compound loading by adding transverse loading capability to the axial loading system. This dimensional expansion allows simulation of realistic flange bolt loading conditions while maintaining measurement precision through independent sensing of each load component.
3Reliability
If multi-bolt compound loading simulation is implemented, then the adaptability to actual flange conditions is improved, but the device complexity increases
Solution Approach 1:
The complex compound loading system is divided into modular functional units: axial loading mechanism, transverse loading mechanism, independent measurement systems for each load type, and controlled displacement devices. This segmentation allows the reliable simulation of actual flange conditions while managing complexity through modular design, where each module can be independently calibrated and maintained.
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 accurate simulation of multi-bolt flange load conditions, effectively assessing the anti-looseness properties of bolts under tension, bending, and torsion, providing real-time load display without interference.
Implementation Method 1
an axial load transmission part, comprising a bottom clamping plate 18, a thin specimen 19, a thick specimen 20, a specimen bolt 21, a bearing cap 23, a thrust ball bearing 24, a top clamping plate 25, an axial load bracket 26 and a hydraulic puller 27
Implementation Method 2
a transverse load transmission part comprising an eccentric coupling 1, a camshaft 2, an end cap 3, a cam connecting rod 4, a hinge pin 5, a U-type connecting rod 6, a first linear bearing 7-1, a second linear bearing 7-2
Data Source
AI summary
The present invention belongs to the technical field of mechanical test devices, and provides a multi-bolt loosening test machine for flange with tension and bending compound loading, which is a test machine researching the anti-looseness properties of bolts by applying tension, bending and torsion compound loading to multi-bolt connection flanges. The multi-bolt loosening test machine for flange with tension and bending compound loading uses a transverse load generated by a three-phase asynchronous motor as a bending load applied to a flange, uses a tension force generated by a hydraulic puller as an axial tension load, is different from the current device that can apply two compound loads to a single bolt, and can apply two compound loads to the multi-bolt connection flanges. The present invention can isolate two compound loads from each other without interference, and display the applied loads in real time.