Vertical Compression Heat Detector for Rubber Samples
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Solution Overview
Problem
Conventional compression heat-generation detectors face issues with inaccurate simulation of dynamic load conditions, inability to maintain constant static force, and poor accuracy in measuring central core temperature of rubber samples due to inclined lever compensation and lack of real-time central temperature measurement.
Innovation Solution
The detector employs a vertical compression device with a stroke adjusting mechanism and a vertical compensation device, along with a synchronization mechanism for the core portion central temperature sensor, allowing for precise vertical compression and compensation, and real-time measurement of central and bottom temperatures using independently driven detecting units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If an inclined lever system is used for compensation, then the device can maintain balance under static load, but the compensation direction deviates from the vertical compression direction causing measurement inaccuracy
Solution Approach 1:
The patent inverts the conventional inclined lever compensation approach by using a vertical lever system where the lever arm is aligned perpendicular to the compression direction. This inversion ensures that the compensation force acts exactly in the vertical direction, eliminating the angular deviation that causes measurement errors in conventional systems.
Solution Approach 2:
The patent introduces a vertical guide mechanism as an intermediary between the lever system and the compression application point. This guide ensures that the compensation force is transmitted purely in the vertical direction without angular deviation, acting as a mediator that decouples the balance function from the measurement accuracy issue.
2Device complexity
If a conventional single-function device is used, then the device structure is simple, but it cannot perform tests under different frequency, temperature and dynamic strain conditions
Solution Approach 1:
The patent transforms the static, fixed-parameter conventional device into a dynamic system with adjustable parameters. The compression frequency can be varied through motor speed control, temperature can be adjusted via environmental chamber, and dynamic strain can be modified by changing the amplitude and frequency of compression cycles, enabling versatile testing under different conditions.
Solution Approach 2:
The patent designs a universal testing platform that can perform multiple types of compression heat-generation tests by adjusting operational parameters rather than requiring separate dedicated devices for each test condition. The same apparatus can test under varying frequencies, temperatures, and strain conditions, making it multi-functional.
3Stability of the object's composition
If the lever balance adjusting device is used to maintain balance, then the static force can be compensated, but the device cannot record transient changes in sample shape, height and dimension
Solution Approach 1:
The patent incorporates sensors that continuously monitor sample dimensions, shape changes, and position during compression, feeding this data back to a control system. This real-time feedback enables the device to both maintain static force balance through the vertical lever system and record transient dimensional changes that occur during dynamic compression cycles.
Solution Approach 2:
The patent replaces purely mechanical balance adjustment with a hybrid system that combines the vertical lever mechanical compensation with electronic sensing and data acquisition systems. This substitution allows simultaneous mechanical force maintenance and electronic recording of transient dimensional information.
4Measurement precision
If temperature measurement is performed after stopping compression, then the central temperature can be measured, but the test must be interrupted and measurement accuracy is reduced
Solution Approach 1:
The patent performs preliminary preparation by pre-positioning temperature sensors at the sample center before compression begins, and maintains continuous measurement throughout the test. This eliminates the need to stop compression for measurement, as the sensing is already in place and operating continuously during the dynamic compression cycles.
Solution Approach 2:
The patent ensures continuous temperature measurement throughout the entire compression test by using sensors that remain in contact with the sample center during dynamic compression. The measurement action continues uninterrupted alongside the compression action, maintaining both test continuity and measurement precision.
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 setup ensures accurate simulation of dynamic load conditions, maintains constant static force, and allows for simultaneous real-time measurement of central and bottom temperatures, enhancing the reliability and accuracy of compression heat-generation tests.
Implementation Method 1
internal heat, vibration damping, sound insulation materials and their viscoelasticity damping effect of structure are directed to energy loss analysis caused by hysteresis effect of materials
Implementation Method 2
viscoelasticity damping effect of structure are directed to energy loss analysis caused by hysteresis effect of materials
Implementation Method 3
The synchronization device for the core portion central temperature sensor... allows for simultaneous real-time measurement of central and bottom temperatures
Data Source
Figure 1
Figure 2~3
Figure 4A~4B
AI summary
A compression heat-generation detector and a method therefor include one set or multi-sets of detecting units. The detecting unit includes a vertical compression device, a vertical compensation device and a synchronization device for a core center temperature sensor. The vertical compression device and the vertical compensation device are respectively fixed in an upper frame 8. A pressure sensor 61 is mounted between a middle support 82 of the rubber sample and a supporting plate 26 of the vertical compensation device via a first transition column 63. The synchronization device for the core center temperature sensor is mounted between the pressing plate of the vertical compression device and the supporting plate of the vertical compensation device, via a second transition column 67 which has the same or similar mechanical properties as the first transition column 63 and a cushion block 65 which has the same or similar mechanical properties as the pressure sensor 61. The second transition column 67 penetrates through a hole of the middle support 82 without affecting accuracy of the pressure sensor 61 in a compression stress test with respect to the rubber sample 73. The device can perform a vertical compression and a vertical compensation with respect to the testing sample. Temperature changes of the center of the sample can be precisely tested during a testing process, thereby simulating an actual working condition precisely.