A method and device for testing the lateral stiffness of a tubular belt

Abstract

The invention discloses a method and a device for testing lateral stiffness of a tubular belt. Multiple groups of test heads provided with sensors are arranged in space, each group of test heads are uniformly distributed around a horizontal axis in the circumferential direction and face the direction of the center of a circle, the test heads define tubular space, a tubular belt test sample piece is encircled into a tubular shape and placed in tubular space, the sensors perform test to obtain electrical signals and transmit the signals to signal conditioning and data acquisition equipment for processing, processed signals are transmitted to a computer for analysis, process and storage, and an analysis result is transmitted to a displayer to be displayed or printed by a printer. According to the method and the device, the test is accurate and efficient, the use is wide, and data can be continuously acquired.

Description

technical field [0001] The invention belongs to the technical field of detection, and relates to a method and a device for testing the transverse stiffness of a tubular belt used for a circular pipe belt conveyor, in particular to a method and a device for testing the transverse stiffness of a tubular belt. Background technique [0002] The round tube belt conveyor is evolved on the basis of the trough belt conveyor. After the flat conveyor belt leaves the tail drum, it is automatically wrapped into a round tube shape under the guidance of the idler roller. The belt edges overlap and overlap, the material is enclosed in the circular tube, and a set of idlers is arranged at intervals, evenly distributed around the circular tube, forming a regular polygon, applying appropriate pressure to the tubular belt to bear its weight, It can maintain the shape of a round tube, and can guide the tubular belt, so that the tubular belt can run along a straight line or a circular arc path. ...

AI Technical Summary

Problems solved by technology

In this case, the size of the test sample block cannot be made too large in the axial direction, otherwise, due to the existence of tension, the pipe diameter at the two ends farther away from the test head will become larger, the size of the overlapped joint will become smaller, and the two ends will form a bell mouth Shape, the shape of the tubular belt has unexpected changes compared with the actual use, which cannot better simulate the real situation of the tubular belt in use, and the test data will naturally deviate significantly from the actual data

[0011] Secondly, when cutting a test sample on a long strip, whether it is mechanical cutting or heating cutting, the physical properties of the position close to the cutting section will change, which will change the adhesion and internal stress between the various parts inside the sample. And it can be shown by the change of tension. The smaller the axial length of the test sample is, the larger the proportion of the size of the affected area to the total size of the sample is, and the more obvious this effect is, so the test results will obviously deviate from the actual value

[0012] In addition, only 6 test points are set, and the scope of use is limited. The number of a set of idler rollers for the actual tubular belt conveyor is not limited to only 6, and sometimes 4, 8, 12 or other numbers are set. Design more test equipment for users

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