Automatic control system and method for distance between air outlet of coal mine roadway dust control device and heading face

By using distance sensors and PLC programming control, the distance between the air outlet and the face of the dust control device in the coal mine roadway is automatically adjusted, solving the problem of difficulty in manual control and improving dust removal efficiency and dust control effect.

CN117738722BActive Publication Date: 2026-07-24CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
Filing Date
2023-12-19
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The distance between the outlet of the existing dust control device in coal mine roadways and the roadway face is difficult to maintain within a reasonable range, resulting in low dust control and removal efficiency, high manual control costs, and high labor intensity.

Method used

A distance sensor is used to monitor the distance between the ventilation duct and the facing head in real time. The movement of the front and rear traction trolleys is controlled by PLC programming, and the distance between the air outlet and the facing head is automatically adjusted to realize the extension and retraction of the frame ventilation duct. Combined with the slide rail and hanging chain structure, the stable movement of the ventilation duct in the roadway is ensured.

Benefits of technology

It improved dust removal efficiency, reduced labor costs, ensured that the distance between the air outlet and the oncoming air was within a reasonable range, and enhanced the dust control effect.

✦ Generated by Eureka AI based on patent content.

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    Figure CN117738722B_ABST
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Abstract

The present application belongs to the field of coal mine roadway dust control and removal, and relates to an automatic control system and method for the distance between the dust control device outlet and the face, comprising a sliding rail hung in the roadway, a wind supply cylinder hung below the sliding rail, a wind cylinder storage device, a dust control device, and a dust control device outlet; the wind cylinder storage device comprises a skeleton wind cylinder, a signboard, a storage section, a connecting section, and a first distance measuring sensor, the first distance measuring sensor and the signboard are respectively arranged at both ends of the skeleton wind cylinder, the measuring end of the first distance measuring sensor faces the signboard, the storage section is arranged in a telescopic structure and hung below the sliding rail through multiple lifting chains; the position of the dust control device outlet is further provided with a second distance measuring sensor, the measuring end of the second distance measuring sensor faces the face coal wall. The present application adopts PLC programming to control the forward or backward movement of the front and rear traction trolleys, realizes real-time control of the distance L between the dust control device outlet and the face, realizes automatic control of the contraction or expansion of the skeleton wind cylinder in the storage section, ensures the dust control process parameters, improves the dust control and removal efficiency, and reduces the labor cost.
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