Views: 0 Author: Site Editor Publish Time: 2026-02-03 Origin: Site
Long-term idling of rotary drilling rigs is prone to environmental factors, leading to issues such as rusting of metal components, moisture damage to electrical systems, and aging of hydraulic elements, which severely affect the subsequent startup performance and service life of the equipment, and may even cause unnecessary economic losses. To perform maintenance during long-term idling, the core focus should be on preventing rust and moisture, while also maintaining all systems, in order to preserve the equipment's performance value. This article summarizes targeted maintenance strategies to provide practical reference for equipment idling management.
The metal components of rotary drilling rigs (such as drill rods, drill bits, machine body structures, and hydraulic pipelines) are prone to rust caused by oxygen and moisture. It is necessary to comprehensively block the rust path from two aspects: surface protection and internal protection.
Surface rust prevention focuses on metal components exposed to the outside. First, thoroughly clean the component surfaces to remove attached soil, oil stains, and rust. Rinse with a high-pressure water gun and air-dry naturally to avoid residual impurities mixing with moisture to exacerbate rust. For core working components like drill rods and drill bits, after cleaning, evenly apply rust preventive oil. Prioritize long-lasting rust inhibitors suitable for outdoor environments, focusing on covering easily rusted areas such as joints and welds. The machine body's metal structure can be painted with rust preventive paint; for damaged paint areas, sand first before repainting to form a complete protective layer. During idle periods, regularly inspect the rust preventive layer and promptly retouch if peeling or aging is found.
Internal rust prevention focuses on closed circuits such as hydraulic and fuel systems. For the hydraulic system, check the oil level, add hydraulic oil that meets specifications, ensure the hydraulic oil is clean and free of impurities, and replace the hydraulic oil filter when necessary to prevent corrosion of pipelines and components caused by oxidized and deteriorated oil. For the fuel system, add high-quality fuel and fuel stabilizers to reduce fuel oxidation and stratification, while draining moisture from the fuel line, closing the fuel valve to prevent residual moisture from rusting the fuel line. Additionally, regularly start the equipment and operate the hydraulic system for 5-10 minutes to circulate the hydraulic oil, avoiding oil film failure due to long-term static of components.
Humid environments are prone to causing short circuits in electrical systems and mold growth on components. To mitigate the effects of moisture, especially for equipment idle maintenance in areas with heavy rainfall and high humidity, it is necessary to optimize storage conditions and implement component protection. Moisture-proofing the storage environment is fundamental. Prioritize parking the equipment in a dry, well-ventilated, and rainproof indoor warehouse, avoiding outdoor storage; if indoor storage is not possible, a sturdy rain shelter must be constructed, with proper ground moisture-proofing measures such as laying gravel and using boards to elevate the equipment body, preventing the bottom of the equipment from coming into contact with damp ground. Additionally, regularly inspect the storage environment, promptly ventilate and dehumidify, and control the environmental humidity to below 60%.
Specialized moisture-proofing for electrical systems and moisture-prone components: Disconnect the main power supply of the equipment, clean dust and moisture from the surfaces of components such as electrical control cabinets, motors, and sensors, close the ventilation ports of the control cabinet, place desiccants (such as silica gel desiccants) inside, and replace the desiccants regularly to prevent electrical components from getting damp and causing short circuits. For critical areas such as motors and wiring terminals, waterproof and dustproof covers can be wrapped around to enhance protection. Furthermore, clean areas prone to water accumulation such as the driver's cab and the top of the hydraulic oil tank to prevent moisture from seeping into the interior of the equipment.
In addition to rust and moisture prevention, it is necessary to synchronously maintain the supporting systems to avoid component aging and failure, and ensure that the equipment can quickly resume normal operation after being idle.
The maintenance of the lubrication system requires the addition of suitable lubricating grease to each rotating joint, bearing, chain, and other components to avoid component jamming and wear caused by long-term inactivity; The tire type rotary drilling rig needs to check the tire pressure and supplement it to the standard range to avoid long-term deformation of the tire under pressure. The tire force position can be adjusted appropriately and the tire should be rotated regularly; The tracked drilling rig needs to clean the debris in the gaps of the tracks, check the tightness of the tracks, apply rust proof lubricating grease to prevent the tracks from rusting and jamming.
Regularly start the trial operation, start the equipment 1-2 times a month, run for 10-15 minutes, check the operation status of the engine, hydraulic system, and electrical system, and promptly troubleshoot any abnormalities; Simultaneously discharge condensed water from engine oil and hydraulic oil, and replenish consumed oil and coolant. During the idle period, clean the equipment properly, regularly remove debris and dust from the body, and avoid the accumulation of impurities that may affect component performance.
1. Before maintenance, disconnect the main power supply of the equipment, release the pressure in the hydraulic system, and avoid safety accidents during operation; operators must receive professional training and be familiar with the equipment structure and maintenance specifications.
2. The selected rust inhibitors, lubricating greases, fuels, etc., must meet the manufacturer's specifications of the equipment; do not mix different model products to prevent component damage.
3. Keep maintenance records, detailing the maintenance time, location, materials used, and equipment status for easy subsequent traceability and maintenance.
04. After idling ends, a comprehensive inspection of all systems of the equipment is required, including removing rust layers, replacing aged oils and desiccants, and conducting trial runs to ensure normal operation before resuming work.
