Selection guide for rotary drilling rig: These upgraded features are worth the money

    The core of the selection of rotary drilling rigs is "pay as needed". Useless configurations will only increase purchase and maintenance costs. Combined with engineering scenarios, the following upgrade functions can effectively improve construction efficiency, safety, and equipment durability, and are worth considering.

    Firstly, the upgrade of imported core hydraulic components, especially the imported Rexroth main pump. As the "heart" of the drilling rig, imported main pumps are more stable under high-pressure conditions, consume less energy, have significantly reduced failure rates, and have more worry free maintenance costs compared to domestic ones. For long-term high-intensity construction, hard rock or deep pile projects, although this upgrade requires an additional investment of 200000 to 500000 yuan, it can reduce downtime losses and extend equipment service life, making it highly cost-effective in the long run.

    Next is the upgrade of drill rod types, with machine lock rods replacing conventional friction rods. Friction rods are suitable for soft soil and shallow pile construction, while machine lock rods have stronger bearing capacity and higher drilling efficiency, especially suitable for hard formations such as moderately weathered and strongly weathered rocks, as well as deep pile engineering above 40 meters. Upgrading the machine lock rod requires an additional investment of 300000 to 800000 yuan, but it can significantly improve the speed of hard rock drilling, avoid problems such as drill pipe slippage and rapid wear, adapt to more complex formations, and enable the equipment to achieve "one machine for multiple purposes".

    Upgrading the intelligent control system is also worth investing in. The basic drilling rig is mostly manually operated. Upgrading the automatic verticality adjustment, hole depth automatic detection, rotary positioning, and fault diagnosis system only requires an additional 100000 to 300000 yuan, but can significantly reduce manual dependence and operational errors. Especially in scenarios such as high-rise buildings and high-speed railway bridges that require high precision for pile foundations, intelligent systems can ensure that drilling verticality meets standards, reduce rework, and monitor equipment status in real time to warn of faults in advance and avoid major damage.

    It is necessary to upgrade the casing drive device and leg oil cylinder for special construction scenarios. In the construction of loose sand layers, flow plastic sludge and other easily collapsed hole formations, the casing drive device can effectively prevent the collapse of the hole wall and ensure construction safety; Upgrading the leg oil cylinder can improve the stability of equipment operation and adapt to construction environments with steep slopes and uneven terrain. These two upgrades require an investment of 150000 to 400000 depending on the configuration, and are suitable for complex site projects such as municipal and water conservancy.

    Finally, there is an upgrade to the centralized lubrication system. Conventional manual lubrication is time-consuming and labor-intensive, and is prone to incomplete lubrication, leading to accelerated component wear. The centralized lubrication system can achieve one click lubrication, covering key parts of the equipment, reducing labor costs, extending the life of vulnerable components such as tracks and slewing supports, and upgrading costs only tens of thousands of yuan. It has outstanding cost-effectiveness and is suitable for all long-term construction scenarios.

    In summary, there is no need to blindly pursue "full configuration" when selecting rotary drilling rigs. Priority should be given to selecting functions that meet the needs of one's own construction stratum and schedule. Core upgrades such as imported main pumps, machine lock rods, and intelligent control systems can truly achieve "increased cost for increased efficiency, increased safety, and reduced worry", avoiding ineffective investment.