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As a core piece of equipment for underground coal mining, the operational condition of a tunnel boring machine’s track assembly directly impacts the safety and production efficiency of the entire machine. Through standardized daily inspections and scientific maintenance management, it is possible to effectively reduce failure rates, improve equipment availability, and provide continuous and stable power support for underground operations. This document consolidates key points regarding daily inspections, lubrication management, and hydraulic system maintenance. Its concise structure facilitates implementation and translation into English.
I. Daily Inspection Daily inspections should focus on the overall condition of the track system. Key points include: ensuring proper track tension and maintaining track bottom flange sag within the range of 50–70 mm; inspecting track plates for cracks, deformation, or severe wear, and promptly replacing damaged components. Simultaneously verifying that the drive sprocket, idler sprocket, and track rollers operate smoothly without binding. If abnormalities are detected, bearings and seals must be disassembled and inspected immediately. Additionally, all connecting bolts in the undercarriage should be inspected and tightened to the specified torque to prevent structural damage or component displacement caused by loosening. II. Lubrication Management Lubrication management must be strictly carried out in accordance with equipment requirements. Gear oil in the reducer should be replaced regularly to ensure it remains clean and free of impurities. Check the oil level monthly and promptly top up with No. 220 gear oil. During refilling, position the fill port and drain port horizontally at the top. Slowly add oil through the fill port until oil overflows from the drain port, then stop to ensure the oil level is accurate, thereby guaranteeing the long-term stable operation of the reducer. III. Hydraulic System Maintenance Hydraulic system maintenance focuses on stability and cleanliness control. Regularly check the pressure of the travel motors and hydraulic lines to ensure the system is leak-free and operates at a stable pressure. Additionally, replace the hydraulic oil filter every three months to prevent oil contamination, which can cause valve sticking or reduced system performance, thereby ensuring the travel mechanism continues to operate efficiently.
By standardizing and systematically implementing inspection and maintenance procedures, the risk of equipment failure can be significantly reduced, and operational reliability and production efficiency can be enhanced. Adhering to standardized management practices will provide safer and more efficient equipment support for underground operations.
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