AC VF Drive Drilling Rigs Features 1. Drill floor equipment installs at ground level and rigs up integrally with the mast 2. Single shaft AC VF gear drives drawworks; Drawworks main brake is hydraulic disc brake, assistant brake is dynamic brake, meanwhile drawworks is equipped with motor auto-bit-feeding device 3. Traveling block position automatic control system prevents "collide up and impact down" accidents. Position control is achieved by real-time detection of traveling block position and PLC calculation and analysis. When traveling block reaches alarming position, "soft-stop" control procedure of "alarming-slowdown-stop" is triggered automatically. Accurate real-time position indication of traveling block makes driller's operation easy. 4. Integrated design of mechanical, electrical, digital control and communication, adopting up-to-state vector control, VF, digital control and field bus communication technology 5. Performance and technical parameters comply with SY/T5609_1999 standard. 6. Main parts conform to API spec and marked with API monogram.
