Electric scraper random cable core breakage detection device and detection method

Abstract

The invention provides an electric scraper random cable core breakage detection device and detection method. The detection device comprises a power distribution cabinet, a device control cabinet and an electric scraper appliance, which are connected in a power supply major loop in sequence. The power distribution cabinet is internally provided with a zero-sequence current transformer connected inthe power supply major loop; the zero-sequence current transformer is connected with an electric leakage protector; the power supply major loop is provided with a main switch; the power distribution cabinet is internally provided with a first filter; the device control cabinet is internally provided with a second filter; and the first filter or the second filter is connected with a third filter inparallel. The detection method and device can check whether a three-phase cable and a ground wire are broken, and the square wave is returned to an open-phase protector through the ground wire; and the open-phase protector judges whether the cable is broken to locate the fault according to change of the returned square wave.

Description

Technical field: [0001] The invention relates to a detection device and a detection method for a random cable broken core of an electric scraper, belonging to the technical field of electromechanical equipment detection. Background technique: [0002] The electric scraper is the most important mining and mining equipment in the underground. It has a large bucket capacity and low failure rate, which is an important guarantee for underground production. The equipment uses a 1000V power supply as the power source. However, during production, the cable travels forward and backward with the electric scraper, and the cable reel of the scraper is rotated to collect and release the cable. Since the cable is always in the power-on state during the operation , the operating environment of the electric scraper is very harsh, and during the movement of the equipment, it is constantly impacted by external forces, which can easily cause the cable to break and cause damage to the equipment...

AI Technical Summary

Problems solved by technology

The equipment uses a 1000V power supply as the power source. However, during production, the cable travels forward and backward with the electric scraper, and the cable reel of the scraper is rotated to collect and release the cable. Since the cable is always in the power-on state during the operation , the operating environment of the electric scraper is very harsh, and during the movement of the equipment, it is constantly impacted by external forces, which can easily cause the cable to break and cause damage to the equipment. When the main switch of the protective cabinet trips, it is impossible to specifically determine whether it is the fault of the cable, the fault of the protector itself, or the fault of the main switch on the plug, slip ring, or equipment.

When a failure occurs, it is often necessary to check all these items one by one, which is time-consuming and laborious. Sometimes the fault point cannot be found specifically, resulting in the replacement of spare parts by mistake, delaying production and wasting costs.

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