Which Second-hand Rotary Drilling Rig Should Be Chosen for Small Site Construction? Analysis of The Advantages of The Compact Model

Small-scale construction sites often encounter problems such as narrow space, limited turning radius, and difficulties in equipment entry and exit. Conventional rotary drilling RIGS are difficult to adapt due to their large size and poor flexibility. The second-hand compact rotary drilling rig, with its compact body and compatible design, has become the preferred choice for small-scale construction sites. The following analyzes its core advantages from six dimensions:

1. compact body: The body width of the Compact model is mostly within 2.5 meters, and the height is controlled at around 3.5 meters, which can easily pass through narrow passages and low Spaces. Compared with conventional drilling RIGS, they can enter the site without large-scale site clearance, significantly reducing the preparation time in the early stage.

2. Flexible steering system: Equipped with crawler multi-angle steering or wheel flexible steering functions, the minimum turning radius can be as low as 3-4 meters. In a small site, multi-angle drilling operations can be completed without repeatedly adjusting the position, thereby improving the utilization rate of the site.

3. Lightweight design: The overall weight of the machine is 30% to 50% lighter than that of conventional drilling RIGS, and it has low requirements for ground load-bearing capacity. It is suitable for small sites with limited bearing capacity such as roof renovations and indoor foundations, avoiding ground collapse or structural damage caused by overly heavy equipment.

4. Modular configuration: Some compact models support modular disassembly and assembly of drill pipes, drill bits and other accessories, making the transportation and storage of accessories more convenient. In a small site, there is no need for large hoisting equipment. The replacement of accessories can be completed manually, reducing the auxiliary cost of equipment.

5. Precise control performance: Equipped with a miniaturized hydraulic control system, it has higher operational sensitivity, and the verticality error of the borehole can be controlled within 0.5%. Small-site construction has higher requirements for hole-forming accuracy. This advantage can effectively avoid rework caused by insufficient accuracy.

6. Low energy consumption feature: Matched with a low-power and high-efficiency engine, fuel consumption is 20%-30% lower than that of conventional drilling RIGS. Small-site construction is mostly decentralized and small-scale work. Low energy consumption can reduce the cost of single-hole construction, which meets the cost performance requirements of second-hand equipment.

In conclusion, for small-scale construction sites, choosing second-hand compact rotary drilling RIGS can solve construction problems in multiple aspects such as space adaptation, flexible operation, and cost control. When making a purchase, pay attention to the body size, steering performance and the wear and tear of core components. Give priority to choosing models with complete maintenance records and suitable for small-diameter drilling (usually ≤800mm) to ensure that the equipment is highly matched with the construction requirements of small sites and achieve efficient operation.