Temperature automatic control device for main motor of auxiliary shaft hoist

Abstract

The invention discloses a temperature automatic control device for a main motor of an auxiliary shaft hoist, comprising a shell provided with a touch screen and operation buttons. The shell is internally provided with an auxiliary shaft hoisting main motor temperature automatic control system and a power supply which are connected with the touch screen and the operation buttons. The auxiliary shaft hoisting main motor temperature automatic control system includes a PLC. The 485 interface of the PLC is connected with a first end of a frequency converter and the HIM of the touch screen. The input interface of the PLC is connected with temperature sensors for detecting the winding temperature of a main motor, the indoor temperature of the main motor and the outdoor temperature of the main motor through an analog input module EM232. The output interface of the PLC is connected with a second end of the frequency converter through an analog output interface. A third end of the frequency converter is connected with a fan through a contactor. The PLC is further connected with the operation buttons and a relay. The power connection end of the PLC is connected with a 24V switching power supply. The PLC is further provided with a sensor for detecting the temperature of the PLC. The problem that a hoist cannot start or stop normally in summer, in winter and in a hot standby state in the prior art is solved.

Description

technical field [0001] The invention belongs to the field of temperature automatic control, and in particular relates to a temperature automatic control device for a main motor for hoisting an auxiliary shaft. Background technique [0002] The coal mine hoist is an important lifting and transportation equipment in the coal mine production process. The coal mined from the underground coal mining face can only be used if it is transported to the ground through the mine transportation and lifting links. The coal mine hoist is mainly engaged in the following tasks: (1) Transport the coal produced underground to the mine (2) Transport the gangue mined by the excavation team to the ground gangue factory (3) Transport the personnel who go down the mine (4) Transport the materials and equipment required for underground production . As the "artery" and "throat" of the coal mining process, the hoist will directly affect normal production and even cause serious personal casualties on...

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Problems solved by technology

[0005] In order to overcome the defects in the prior art that the hoist cannot be started and stopped normally in summer, winter and hot standby state, the present invention provides a method that can ensure that the hoist can be st

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