Technical report on customized short arm down the hole drilling rig
1, Product positioning and core advantages
For special scenarios such as narrow tunnels and slope reinforcement, the customized short arm drilling rig achieves flexible operation through compact design (arm length ≤ 3.5m) and modular power system, reducing space occupation by 40% compared to traditional models, while retaining 80-120mm drilling capacity to meet the construction requirements of rock formations with a Brinell hardness f ≥ 12.
2, Key technological breakthroughs
Power adaptability: optional electric (55kW) or diesel (65kW) dual power mode, reducing fuel consumption by 25%, supporting low-temperature starting at -30 ℃;
Intelligent control: Integrated pressure feedback system, automatic adjustment of impact frequency (800-1200 times/minute), hole verticality deviation ≤ 1 °;
Quick disassembly and assembly: The hydraulic quick change drill rod mechanism reduces the rod changing time to 90 seconds, and the dust collection rate of the supporting dust removal system is ≥ 85%.
3, Application effectiveness
In the construction of a lead-zinc mine tunnel in Yunnan, the average daily footage of this model reached 15m, and the failure rate decreased by 30% compared to similar products, verifying its irreplaceability in small space and high-precision operation scenarios.
