Cable bending stress testing device

Abstract

The invention discloses a cable bending stress testing device. The device comprises a base, a motor, an oscillating element, a testing plate and two connecting mechanisms, wherein the motor and the testing plate are fixed on the base, the oscillating element comprises a transmission part and a swinging arm, the transmission part is connected with an output shaft of the motor, and the two connecting mechanisms are arranged on the mounting panels of the swinging arm and the testing plate, respectively; the motor is used for driving the swinging arm and the connecting mechanism arranged on the swinging arm to reciprocate, and two limiting parts are installed on the mounting panel. The two connecting mechanisms are convenient for the assembling of a tested cable, one end of the tested cable is driven to move through the motor and the oscillating element, and the tested cable can be repeatedly bent at two sides by means of the two limiting parts so as to test the bending stress of the tested cable; the device is simple in structure, and convenient for processing and preparation; after a bending test in the schedule time, whether the tested cable is cracked is observed, thereby effectively guaranteeing the reliability of the cable and improving the security and the reliability of a lamp.

Description

Technical field [0001] The invention relates to cable performance testing, in particular to a cable bending stress testing device. Background technique [0002] As a kind of lighting appliances with high reliability and safety, special lamps are widely used in all walks of life. In the process of lamp use, the carrier of power supply to the lamp is the cable, so the quality of the cable is directly related to the lamp Whether the reliability and safety of the cable are guaranteed, the cable is composed of two parts, 1. The core, which is the conductor part, is mainly used to provide the power carrier for the lamp; 2. The insulating sheath mainly protects the core and prevents Human body electric shock or other safety hazards, and the cable will be bent by various stresses during actual use, such as the stress of wind blows, the stress of twisting back and forth when people install the cable, etc., causing the cable insulation to crack And other abnormal phenomena, causing safety...

AI Technical Summary

Problems solved by technology

[0002] As a kind of lighting equipment with high reliability and safety, special lamps are widely used in all walks of life. In the process of using lamps and lanterns, the carrier of power supply to lamps is cables, so the quality of cables is directly related to lamps and lanterns. The reliability and safety of the cable are guaranteed. The composition of the cable is divided into two parts. 1. The core, which is the conductor part, is mainly used as a carrier to provide power to the lamp. 2. The insulating sheath mainly protects the core and prevents Electric shock to the human body or other potential safety hazards, and the cable will be bent by various stresses during actual use, such as: the stress of wind blowing, the stress of people twisting back and forth when installing the cable, etc., resulting in cracks in the cable insulation layer and other abnormal phenomena, resulting in safety accidents

Therefore, the bending stress performance of the cable insulation layer in the normal temperature environment must be considered at the beginning of the design of the lamp, and it is also related to whether the environmental adaptability of the lamp meets the actual use requirements, but now there is no convenient test tool for it. The bending stress of the cable is tested, so the performance of the lamp cannot be guaranteed

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