Wire jacket tearing detection device

Abstract

The embodiment of the invention discloses a wire jacket tearing detection device. The wire jacket tearing detection device comprises a control unit, a simulation unit and a detection unit, wherein the simulation unit is connected with the control unit to simulate the situation of a tested wire under the squeezing of a lateral sharp instrument at an electrification state, the detection unit is connected with the simulation unit to detect the safety performance of the tested wire under the working state of the simulation unit, and the simulation unit is provided with a first connecting end and a second connecting end, which are electrically connected with two test ends of the tested wire so as to enable the tested wire to be electrified. Through the simulation unit and the detection unit, which are connected with the control unit, the synchronous intelligent test and detection can be realized, the detection efficiency is high, and the detection result is accurate.

Description

technical field [0001] The invention relates to the technical field of wire detection, in particular to a wire sheath tear detection device. Background technique [0002] For the inspection of wires, not only routine inspections, but also various safety inspections are required. Among them, the wire and cable sheath tear test is a safety test for the wire manufacturer or the quality inspection department to simulate whether the wire will appear open circuit, short circuit, or leakage when it is squeezed by a lateral sharp object. At present, the tearing test of the wire sheath is generally carried out by manual operation on the market, that is, the wire is fixed on a fixture with an inclination angle of 45°, and a hard alloy indenter with an edge is placed directly above the slope of the fixture. A weight of specified weight is added above the indenter, and the weight of the weight is repeatedly applied to the surface of the tested wire through the indenter in a manual mann...

AI Technical Summary

Problems solved by technology

[0003] Manually repeating the weight of the weight attached to the indenter through the indenter to squeeze the wire under test has at least the following defects: 1. It requires a lot of manpower; 2. The test process is cumbersome and slow. Slow; 3. In the case of manual operation, the impact speed and impulse of the weight of the weight on the extrusion of the wire cannot be grasped. The experimental process is mixed with many uncertain factors, which seriously affects the experimental results.

[0004] There are also many defects in the method of manually performing open circuit, short circuit, leakage and other performance tests on the wires: 1. There is a certain amount of human interference in manual operation, which affects the accuracy of the test results; 2. Open circuit, short circuit, and leakage When two or more abnormalities occur at the same time, it is impossible to distinguish which abnormality occurs first, which does not meet the detection requirements of immediate alarm and shutdown when any abnormality occurs in the wire sheath tear test; The strength of the current will change the physical properties of the wire, insulation layer and sheath in the wire, and when the wire is energized, the wire’s anti-destructive performance will be weakened due to heat and other reasons, and the existing wire sheath tear test It is carried out without a voltage load, so the test process cannot truly simulate the condition of the wire with a voltage load during use, and the simulation is not high, which also leads to the inability to accurately detect the performance of the wire during use

[0005] In the existing wire sheath tear test, the simulation test and performance testing procedures are manually operated and carried out step by step. The wire detection process lags behind the sheath tear test process, and it is impossible to detect the condition of the wire during the torn test process in real time, and the detection results are not accurate enough

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