Steel wire rope bending fatigue testing apparatus

Abstract

The invention discloses a steel wire rope bending fatigue testing apparatus which comprises a rack, a driving wheel, a test wheel, a guide wheel, a counterweight wheel, a control box and a driving device, wherein the driving device is used for driving the driving wheel; the counterweight wheel is mounted on a wheel stand; a fixing block is arranged on the rack and positioned above the counterweight wheel; a chute is formed in the fixing block along the vertical direction; the upper end of the wheel stand is connected into the chute in a sliding manner; the lower end of the wheel stand is connected with a servo driving device used for driving the wheel stand to move up and down; the servo driving device is electrically connected with the control box; a tension sensor is arranged on the testwheel; and the tension sensor is electrically connected with the control box. According to the testing apparatus disclosed by the invention, the tension stressed by a to-be-tested steel wire rope isacquired in real time by the tension sensor, the wheel stand is driven to move up and down by a servo electric cylinder so as to give a certain compensation in the process of enabling the to-be-testedsteel wire rope to slide up and down, and the tension stressed by the to-be-tested steel wire rope in the testing process is further kept constant, so that the accuracy of test data is improved.

Description

technical field [0001] The invention relates to the field of steel wire rope performance testing equipment, in particular to a steel wire rope bending fatigue test device. Background technique [0002] At present, when steel wire ropes are tested for fatigue life, they are usually detected by a steel wire rope bending fatigue testing machine. Chinese patent literature publication CN106198252A discloses a steel wire rope bending fatigue testing machine, which includes a frame and a driving wheel, a test wheel, a guide wheel, a counterweight wheel, a driving device and a control box installed on the same side of the frame, wherein, The driving wheel is installed on the top of the frame, the test wheel is located on one side of the driving wheel, the balance wheel is arranged under the test wheel, and the guide wheel is located on the balance wheel. Between the driving device and the driving wheel, a driving rod is connected between the driving device and the driving wheel. On...

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Problems solved by technology

[0003] The object of the present invention is to address the above problems, to provide a steel wire rope bending fatigue test device, to solve the problem that the weight of the weight of the counterweight wheel configuration of the existing steel wire rope bending fatigue testing machine is constant, causing the tension of the steel wire rope in the process of sliding up and down through the test wheel Constantly changing, which easily affects the accuracy of test data

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