Compression heat generation detector and method thereof

Abstract

The invention relates to a compression heat generation detector and a method thereof. The detector comprises one or more detection units, the detection unit (or each of the detection units) includes a vertical compression device, a vertical compensation device and a core and center temperature sensor synchronization device; and the vertical compression device and vertical compensation device are respectively fixed on an upper frame, the core and center temperature sensor synchronization device is arranged between the pressure plate of the vertical compression device and the support plate of the vertical compensation device through a transitional column having same or similar mechanical properties with another transitional column and a cushion having same or similar mechanical properties with a pressure sensor, and the transitional column just penetrates through the hole of a middle bearer, and does not influence the test accuracy of the compression stress of a rubber sample by the pressure sensor. The detector allows the test sample to be vertically compressed and vertically compensated, the temperature change of the center position of the sample in the test process to be accurately tested and practical conditions to be accurately stimulated.

Description

Technical field [0001] The invention relates to a compression heat generation detector and a method thereof, in particular to a device and a method for detecting the heat generation phenomenon of rubber under dynamic alternating load or strain. Background technique [0002] The heat generation phenomenon of rubber under dynamic alternating load has always been an indicator of concern to researchers. In practical applications, the internal heating of various tires and conveyor belts in high-speed operation, the viscoelastic damping effect of vibration reduction, sound insulation materials and their structures, all involve energy loss analysis caused by material hysteresis. [0003] When the wheel rolls, part of the vehicle weight acting on the tire and the impact load of the road surface on the wheel cause the tire to undergo repeated compression and deformation, and most of the work consumed by the compression deformation is converted into heat. Since most tire materials (rubber a...

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Problems solved by technology

[0007] 1. If image 3 As shown, the balance lever balance compensates the lower surface of the sample. Since the fulcrum of the lever does not coincide with the supporting point of the sample, when the lever tilts at a certain angle α due to the weight difference between the front and rear lumps, the lower surface of the sample and the upper surface under pressure will be caused. The surface is not parallel, and the wheel is subjected to the gravity model of the vehicle body, and the periodic compression of the vehicle body is biased, and the actual working conditions cannot be accurately simulated under the experimental conditions

[0008] 2. The compensation value is inaccurate

[0009] 3. The core temperature cannot be measured in real time

But at this time, when the needle-shaped temperature sensor is inserted into the rubber sample, its temperature is quite different from the real temperature inside the sample, which will cause errors in the test results.

[0010] 4. The instrument can only measure the temperature of one sample

This method has a complex structure, and there is friction between the temperature sensor probe and the rubber sample during the compression process, which will affect the reliability and operability of the equipment and the accuracy of the test results to a certain extent.

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