Swing dynamic load testing machine

Abstract

The invention discloses a swinging dynamic load testing machine. The swinging dynamic load testing machine comprises a swing bracket, a load assembly and a first air cylinder which is mounted on the load assembly; the upper end of the swing bracket is provided with a cross beam; a test piece is hinged to the cross beam; the test piece comprises a swinging arm and a seat plate; the load assembly is mounted on the seat plate; one side of the swing bracket is provided with a baffle which can abut against the piston rod of the first air cylinder so that the piston rod of the first air cylinder can obtain a force; the swing bracket is provided with position sensors; the position sensors comprise a first sensor, a second sensor and a third sensor, wherein the first sensor and the second sensor are respectively arranged at two ends of the moving track of the test piece, and the third sensor is arranged between the first sensor and the second sensor; the mounting height of the first sensor is larger than the height of the second sensor; the first sensor is used for detecting the swinging amplitude of a swing; the second sensor is used for triggering the movement of the first air cylinder, so that the first air cylinder can apply a pushing force to the swing timely when the swinging amplitude of the swing is smaller than a certain range after energy is lost; and the third sensor is used for calculating the number of the times of the swinging of the test piece.

Description

technical field [0001] The invention relates to the field of dynamic load testing devices, in particular to a swing dynamic testing machine. Background technique [0002] With the continuous improvement of people's living standards, the demand for small amusement facilities in children's entertainment places in kindergartens, schools, playgrounds and communities is also increasing, and the export volume of such amusement facilities is also increasing. The facilities and products are mixed, and there have been many accidents in which children used small amusement facilities to cause casualties. The quality standards of swings are not effectively in line with international standards. The influence of these technical barriers to trade produced by standard issues often causes product exports to be blocked. At present, the patent with the publication number CN205103021 U discloses a swing fatigue testing machine, which includes two vertically arranged columns, cross bars and cros...

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of people's living standards, the demand for small amusement facilities in children's entertainment places in kindergartens, schools, playgrounds and communities is also increasing, and the export volume of such amusement facilities is also increasing. The facilities and products are mixed, and there have been many accidents in which children used small amusement facilities to cause casualties. The quality standards of swings are not effectively in line with international standards. The influence of these technical barriers to trade produced by standard issues often causes product exports to be blocked. At present, the patent with the publication number CN205103021 U discloses a swing fatigue testing machine, which includes two vertically arranged columns, cross bars and cross beams. The rod is erected on the top of the two columns, and the two ends of the beam are respectively arranged on the two columns. The power boosting device is fixed on one side of the bracket through the pole. When the swing touches the cylinder, the push rod will give the swing a reverse force. Although it is more than enough to push the swing to an initial swing height in time, it does not Approximately simulates the state of the swing when it is in motion, and cannot accurately simulate the loss suffered by the swing after completing several complete swing cycles

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