Maintenance Guide for Hole Punching Machine: Core Strategies for Extending Equipment Lifespan and Ensuring Construction SafetyDuring a crucial renovation project of the city's water supply main pipelines, a drilling machine that was meticulously maintained on a daily basis remained stable in performance after operating continuously for 36 hours. In contrast, another machine of the same model that was neglected in maintenance had to be shut down after only 4 hours of operation due to abnormal heating of the main shaft - the difference in maintenance directly determined the success or failure of the project. In the modern field of pipeline construction and maintenance and repair, the hole-making machine is an indispensable core equipment for realizing key technologies such as pressure-bearing hole drilling and pipeline renovation. Whether it is the non-stop pipeline renovation in urban underground networks or the online maintenance of petrochemical facilities, the reliability of the hole-making machine directly affects the safety, efficiency and cost of the entire project. 01 Equipment Understanding: The Working Principle and Structural Characteristics of the Punching Machine The hole-making machine is a specialized engineering equipment designed for performing mechanical cutting on pressure-bearing pipelines. It is driven by hydraulic or electric power systems, causing the specially designed cylindrical cutting tools to rotate, thereby cutting out a complete circular hole on the pipeline wall. During the entire process, the pipeline medium continues to flow without the need for a shutdown. A typical drilling machine consists of five core systems: 1. Power system: Hydraulic power station or motor, providing the power required for the equipment to operate. 2. Transmission system: Gearbox, spindle, feed mechanism, which transmits power and controls the cutting motion 3. Cutting System: Cylindrical cutting tools, teeth, guide drills, performing the actual cutting tasks 4. Sealing system: Mechanical seals, packing boxes, to prevent leakage of the medium 5. Control System: Operation panel, hydraulic valve group, sensors, control equipment operation These systems work together to enable the hole-making machine to operate safely on pipelines with a pressure of up to 10 MPa. Understanding this structural feature is the basis for formulating effective maintenance plans, as each system has its own unique maintenance requirements and cycles. 02 Maintenance Philosophy: The Value System of Preventive Maintenance The maintenance of the hole-making machine should not be regarded as a "necessary expense", but rather understood as a "highly rewarding investment". A scientific maintenance system is based on three core concepts: Prevention is better than repair: The cost of regular inspection and maintenance is usually only 20%-30% of the cost of repair after a failure, and it can avoid greater losses caused by unplanned downtime. An industry survey shows that for drilling machines that implement preventive maintenance, the average time between failures can be extended by 3-5 times. Systematic rather than fragmented: Maintenance is not merely "oiling and cleaning", but should establish standardized processes covering the entire life cycle and system of the equipment. This includes daily inspections, regular maintenance, seasonal upkeep, and major overhaul plans. Data-driven decision-making: Modern hole-making machine maintenance is increasingly relying on operational data. By monitoring parameters such as hydraulic oil temperature, vibration frequency, and tool wear volume, predictive maintenance can be achieved, allowing actions to be taken before a failure occurs. The establishment of this maintenance philosophy has led many professional construction units to incorporate the maintenance of the drilling machine into the ISO55001 asset management system, achieving an optimal balance among equipment reliability, availability and maintenance costs. 03 Daily Maintenance: Foundation Determines Height Daily maintenance is the cornerstone of the opening machine's maintenance system and should be strictly followed before and after each operation. These seemingly simple steps can detect 80% of the early fault signs. Pre-work checklist: · Visual inspection: Check if the equipment casing has any obvious damages or cracks · Connection check: Ensure that all hydraulic connectors and electrical connections are securely fastened without any looseness. · Oil level check: The oil level in the hydraulic tank should be within the specified range. If it is insufficient, immediately add the same type of hydraulic oil. · Function testing: Run the equipment without load to check if all actions are smooth and there are no abnormal noises. · Tool inspection: Check whether the cutting edge of the tool is intact and whether the teeth are securely fixed. Post-work maintenance points: · Cleaning equipment: Use a dedicated cleaning agent to remove cutting debris and oil stains from the surface of the equipment. Pay special attention to cleaning the protruding part of the spindle and the guide rails. · Drainage and Ventilation: Drain any accumulated water from the bottom of the hydraulic oil tank and check if any air has been mixed into the system. · Rust prevention treatment: Apply a thin layer of rust inhibitor on the exposed metal surfaces such as the main shaft and guide rails. · Tool Maintenance: Remove the tool, clean it, and inspect the wear condition. If necessary, perform edge grinding or replace the tool. Daily maintenance should be directly handled by the equipment operators and the maintenance records should be filled out. These records not only help track the equipment status but also provide data support for subsequent regular maintenance. 04 Regular Maintenance: Systematic and In-depth Repair Regular maintenance is a systematic upkeep carried out at fixed intervals. It is typically divided into three levels: monthly, quarterly, and annual. This level of maintenance requires more specialized knowledge and tools, and is usually carried out by equipment managers or professional technicians. Monthly maintenance (performed every 200-300 hours of operation or once a month): · Hydraulic system: Replace the hydraulic oil filter element, check the contamination level of the hydraulic oil. If emulsification, discoloration or contamination exceeds NAS10 level is detected, all the hydraulic oil should be replaced. · Transmission system: Check the oil level in the gearbox and add or replace the specified type of lubricating oil.