Composite insulator dynamic load torsional vibration testing machine

Abstract

The invention relates to a composite insulator dynamic load torsional vibration testing machine, comprising a frame device, a tensile load device, a left and right oscillating load device, a back and forth oscillating load device, an inner oscillating rack, a torsional load device, a composite insulator, an outer oscillating frame and a slide rail. The tensile load device provides a tensile load. The left and right oscillating load device and the back and forth oscillating load device provide a left and right oscillating load and a back and forth oscillating load respectively. The torsional load device provides a torsional load. The abovementioned loads can be added in an independent or combined manner, so that the dynamic load torsional vibration test is performed on the composite insulator. After the testing machine completes the test, damage parts, damage degrees and microstructures of damage areas under a scanning electron microscope are observed, other mechanics performance tests are carried out, and experiment results under different experiment conditions are compared and analyzed so as to study influences of various factors under a practical working condition on damage conditions of the insulator.

Description

technical field [0001] The invention relates to a composite insulator performance testing machine, in particular to a composite insulator dynamic load torsional vibration testing machine. Background technique [0002] At present, there is no experimental machine that can systematically study the damage mechanism of insulators. Many studies have only theoretically pointed out that composite insulators under natural working conditions often have flashovers, aging, slipping and falling off of fittings, mandrel breakage, Faults such as hardware damage are mainly caused by the combination of a series of factors such as the insulator bearing the load of the wire (including the weight of ice coating), the dynamic load caused by wind vibration, the uneven electric field, and the corrosion of environmental pollution. At present, the testing machine designed by some scholars to explore the damage mechanism of composite insulators only considers the damage status of the insulator under...

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Problems solved by technology

[0002] At present, there is no experimental machine that can systematically study the damage mechanism of insulators. Many studies have only theoretically pointed out that composite insulators under natural working conditions often have flashovers, aging, slipping and falling off of fittings, mandrel breakage, Faults such as hardware damage are mainly caused by the combination of a series of factors such as the insulator bearing the load of the wire (including the weight of ice coating), the dynamic load caused by wind vibration, the uneven electric field, and the corrosion of environmental pollution.

At present, the testing machine designed by some scholars to explore the damage mechanism of composite insulators only considers the damage status of the insulator under some single factors such as tension or torque. However, the influencing factors of real working conditions are more complicated than these experimental working conditions. much

At the same time, the wind load and ice load are random in actual conditions. If only constant or periodic loads are used for simulation, the obtained results are not accurate enough to describe the damage mechanism of insulators.

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