Zhuofang Group’s ZFH portable fully hydraulic core drill is a typical modular drill rig, consisting of multiple independently transportable modules that can be moved using drones and small handling equipment. These modules can be quickly separated and reassembled. Its drill frame adopts a mast-style structure, formed by combining guide rails and a mast. The power head uses a lightweight top-drive design that can slide up and down along the guide rails to drive the rotation and vertical movement of the drill string system. The drive and control of the hydraulic system are entirely hydraulically operated. The drilling process employs thin-wall diamond wireline coring. It is primarily used as a new type of equipment for solid mineral exploration and engineering geological drilling.
1. Drill Rig Features
(1) Modular, mast-style drill frame structure.
– Modular and lightweight design, with the heaviest module weighing less than 180 kg. No road construction is required, and it can be manually transported.
– Mast-style drill frame structure eliminates the need for a derrick, allowing drilling at any angle from 0 to 90 degrees. It can be quickly relocated, disassembled, and reassembled.
– Top-drive power head with long-stroke guide rails and cylinder propulsion, eliminating the need for repeated rod handling. Excellent guidance and directional stability.
– Small platform footprint, no foundation engineering required, environmentally friendly.
(2) Fully hydraulic transmission.
– Flexible layout, lightweight, and highly operable.
– Stepless speed adjustment, capable of high-speed operation, stable drilling process with minimal vibration.
– Real-time monitoring of downhole conditions through various pressure readings, with pressure limiting protection for safety.
– Simple maintenance and upkeep.
(3) Thin-wall diamond wireline coring drilling process.
– Wireline coring tools feature “fullness, rigidity, and straightness,” ensuring good hole deviation control.
– Thin-wall drill bits require relatively low drilling pressure and torque resistance, with fast cutting speeds and high drilling efficiency.
– For the same diameter, thin-wall drill tools provide larger core diameters and higher core recovery rates.
– Small annular gaps reduce the risk of blockages and jamming, minimizing accidents and ensuring safety.
2. Main Modular Components of the Portable Fully Hydraulic Core Drill
Taking the ZFH portable fully hydraulic core drill 600 series as an example, it primarily consists of the following components:
– Drill frame system
– Power head
– Hydraulic control console
– Hydraulic oil tank
– Power module (composed of one or multiple engines)
– Fuel and power supply module
– Fishing winch
– Hydraulic mud pump
– Large and small mud tanks
– Hydraulic mixer
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