Mesin Penggerak Frekuensi Variabel AC
• Komponen utama saka drawwork yaiku motor frekuensi variabel AC, peredam gir, rem cakram hidrolik, rangka winch, rakitan poros drum lan mesin bor otomatis, lan liya-liyane, kanthi efisiensi transmisi gir sing dhuwur.
• Gir iki dilumasi nganggo lenga tipis.
• Drawing digawe saka struktur poros drum tunggal lan drum kasebut beralur. Dibandhingake karo drawwork sing padha, iki nduweni akeh kaluwihan, kayata struktur sing prasaja, volume cilik, lan bobote entheng.
• Iki minangka penggerak motor frekuensi variabel AC lan pengaturan kecepatan stepless ing kabeh lintasan, kanthi daya dhuwur lan jangkauan kecepatan sing amba.
• Rem utama nganggo rem cakram hidrolik, lan cakram rem nganggo banyu utawa udara sing adhem.
• Rem tambahan kuwi nganggo pengereman dinamis motor.
• Dilengkapi sistem pengeboran otomatis motor independen.
Parameter Dasar saka Penggerak Frekuensi Variabel AC Poros Tunggal Drawworks:
| Model rig | JC40DB | JC50DB | JC70DB | |
| Ambane pengeboran nominal, m(ft) | nganggo DP Ф114mm (4 1/2”) | 2500-4000(8200-13100) | 3500-5000(11500-16400) | 4500-7000(14800-23000) |
| nganggo DP ukuran Ф127mm(5”) | 2000-3200(6600-10500) | 2800-4500(9200-14800) | 4000-6000(13100-19700) | |
| Daya sing dirating, kW (hp) | 735 (1000) | 1100 (1500) | 1470 (2000) | |
| Jumlah motor × daya sing dirating, kW (hp) | 2×400(544)/1×800(1088) | 2×600(816) | 2×800(1088) | |
| Kacepetan motor sing dirating, r/min | 660 | 660 | 660 | |
| Diameter saluran pengeboran, mm(in) | 32 (1 1/4) | 35 (1 3/8) | 38 (1 1/2) | |
| Tarikan tali cepet maksimal, kN (kips) | 275(61.79) | 340(76.40) | 485(108.36) | |
| Ukuran drum utama (D×L), mm (in) | 640×1139(25 1/4×44 7/8) | 685×1138(27 ×44 7/8) | 770×1439(30 ×53 1/2) | |
| Ukuran cakram rem (D×L), mm(in) | 1500×76 (59 ×3) | 1600×76 (63×3) | 1520×76 (59 3/4) | |
| Daya motor saka mesin bor otomatis, kW (hp) | 37(50) | 45(60) | 45(60) | |
| Jinis transmisi | Transmisi gir tahap ganda | Transmisi gir tahap ganda |
Transmisi gir tahap ganda | |
| Rem bantu | Pengereman dinamis | Pengereman dinamis | Pengereman dinamis | |
| Dimensi sakabèhé (P×L×T),mm(in) | 4230×3000×2630 (167×118×104) | 5500×3100×2650 (217×122×104) | 4570×3240×2700 (180×128×106) | |
| 重量Bobot, kg (lbs) | 18600(41005) | 22500(49605) | 30000(66140) | |






