Frequency conversion rotation bending fatigue tester

Abstract

The invention discloses a frequency converting rotary bending tester, belonging to the material testing technical field, comprising a frame, a motor system, a control system, a balance system and a loading system, wherein, the motor system comprises a motor, metal coatings, a driving wheel, a driven wheel, a strap, a wheel shaft, a left collet and bearings; the motor is connected with the driven wheel through the driving wheel and the strap; the driven wheel is fixed on the wheel shaft; the right end of the wheel shaft is provided with the left collect, and the left end of the wheel shaft is sleeved in the frame through two bearings; and the metal coatings are covered outside the motor, the driving wheel, the driven wheel, the strap and the wheel shaft; and the left end of the frame is provided with a platform which is provided with the motor. Designs of the frame and the motor system are more reasonable, so that test errors caused by vibrations during operating are smaller. The tester frequency converting rotary bending tester has the advantages of simple structure, easy operation, low operating noise, multiple functions and accurate test data.

Description

technical field [0001] The invention relates to a testing mechanical equipment in the technical field of material testing, in particular to a frequency conversion rotating bending fatigue testing machine. Background technique [0002] Fatigue testing machine is a kind of testing equipment for testing the fatigue life and fatigue strength of metal or non-metallic materials, mainly including hydraulic servo type, electromagnetic type and mechanical type. Among them, the hydraulic servo fatigue testing machine is a more advanced testing device, but the price is high. In addition, when working at low frequency, the power consumption is large and the cost is high, so it needs to be used in conjunction with other low frequency fatigue testing machines. The frequency of the electromagnetic fatigue testing machine is high, and it is mainly used in the test of the fatigue performance of ferrous metals with good fatigue performance. Most of the mechanical test equipment adopts spring...

AI Technical Summary

Problems solved by technology

Although this mechanical fatigue testing machine has many advantages, it still can only test the tensile fatigue strength, but cannot measure the compression condition or measure the tension-compression composite state that is closer to the actual application.

In addition, this type of equipment is large in size, complex in structure, and the load of the motor changes rapidly, which not only affects the life of the motor, but also reduces the power utilization rate

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