A mine overhead line power supply controller

Abstract

The invention discloses a mine overhead line power supply controller, A locomotive track is sequentially pas through a high-voltage rectifying circuit, the DC contactor is connected with the input endof the overhead line, The high voltage rectifier circuit is also connected to an external alternating current circuit, A low-voltage rectify circuit is sequentially passed through that locomotive track, The detection end of the current limiting resistance is connected with the control end of the direct current contactor through a controller, and the overhead line is connected with the locomotivetrack through the pantograph of the electric locomotive in turn, the main contact of the main command controller, the direct current motor and the speed regulating resistance. In use, A main contact of that main command control is communicated, the voltage of the detection terminal 21 on the voltage divide resistor is reduced, when the controller detects the voltage drop of the detection terminal,the control controls the DC contactor to be communicated, the locomotive track and the overhead line are communicated with the high-voltage rectifying circuit, and the high-voltage rectifying circuitdrives the DC motor to rotate so as to drive the locomotive to run.

Description

technical field [0001] The invention relates to the technical field of rail transportation for mines, in particular to a mine overhead line power supply controller. Background technique [0002] Because the electric locomotive has the characteristics of simple system, durable, easy maintenance, and no pollution, most mines in my country use DC electric locomotives as the main means of transportation in underground mines, especially in metal mines. At present, most of the overhead lines adopt the continuous power supply of the unified network and run for a long time. The voltage of the overhead lines is relatively high (DC250V or more). In addition, most of the small and medium-sized mines in our country are narrow in the underground roadway, the space is limited, the air is humid, and personnel and locomotives Walking in the same roadway, and many places do not reach the height of the roadway specified in the regulations, often causing electric shock casualties, especially w...

AI Technical Summary

Problems solved by technology

At present, most of the overhead lines adopt the continuous power supply of the unified network and run for a long time. The voltage of the overhead lines is relatively high (DC250V or more). In addition, most of the small and medium-sized mines in our country are narrow in the underground roadway, the space is limited, the air is humid, and personnel and locomotives Walking in the same roadway, and many places do not reach the height of the roadway specified in the regulations, often causing electric shock casualties, especially when loading and unloading operations in the mining area, the probability of touching overhead lines is higher, often causing major casualties Accidents, for this reason, shortening the time of live running of overhead lines as much as possible, so that the overhead lines are only charged when the electric locomotive is running, and there is no electricity when the electric locomotive is running, is an important safety measure to reduce electric shock accidents

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