Description
Drawworks
Features of Mechanical Drawworks
• All bearings are roller bearings. Shafts are made of alloy steel.
• Chain drive transmits with high accuracy and high strength and has forced lubrication.
• The drum is grooved. Ventilating air clutches constitute the high and low speed ends.
• The brake drum (brake disc) is cooled with circulating water.
• Main brake is band brake or disk brake, the auxiliary brake is eddy current brake (water-cooled or air-cooled.)
• The surface is hardened with middle frequency induction, and is very durable for long life.
• The sprocket tooth profile is hardened with middle frequency induction. Involute serration tooth clutch works as a shifting clutch.
Spec. of Mechanical Drawworks
Model | JC40 | JC50 | JC70 | |
Nominal drilling depth m |
Ф114mm(41/2 in) DP | 2500-4000 | 3500-5000 | 4500-7000 |
Ф127mm(5 in) DP | 2000-3200 | 2800-4500 | 4000-6000 | |
Rated power kW(hp) | 735 (1000) | 1100 (1500) | 1470 (2000) | |
Max. fastline pull kN | 275 | 340 | 485 | |
Dia. of wineline mm(in) | 32 (1 1/4 ) | 35 (1 3/8 ) | 38 (1 1/2) | |
Drun size(D×L) mm(in) | 640 ×1235 (25 1/4 ×48 1/2) |
685×1245 (27 ×49 ) |
770×1436 (30 ×56 1/2 ) |
|
Brake drum size(D ×W) mm(in) | 1168×265 (46 ×10 1/2 ) |
1270×267 (50 ×10 1/2 ) |
1370×267 (54 ×10 1/2 ) |
|
Brake disc(D×W) mm(in) | 1500×76 (59 ×3) |
1600×76 (63 ×3 ) |
1600×76 (63 ×3 ) |
|
Sand drum size(D ×L) mm(in) |
356×1245 (14×49 ) |
356×1430 (14 ×56 1/4 ) |
356×1430 (14 ×56 1/4 ) |
|
Sand drum capacity(Ф14.5 wireline) m(ft) | 3500 (11480 ) | 4500 (14760 ) | 6000 (19685 ) | |
Auxiliary brake | DS40 | DS50 | DS70 | |
Dimension(L×W×H) mm | 6450×2560×2482 | 7000×2955×2780 | 7930×3194×2930 | |
Weight kg | 28240 | 45210 | 43000 |
DC Drawworks
Features of DC Drawworks
• All bearings are roller bearings. Shafts are made of alloy steel.
• The drum is grooved. Ventilating air clutches constitute the high and low speed ends.
• The brake is hydraulic disc brake and is water-cooled or wind-cooled,
• The auxiliary brake is eddy water-cooled or wind-cooled current brake.
• Shifting is through the air clutch.
• Chain transmission structure.
• Chains are lubricated by thin oil, bearings are lubricated by grease.
• Split construction.
Spec. of DC Drawworks
Model |
JC40D |
JC50D |
JC70D |
JC90D |
|
Nominal drilling depth |
Ф114mm(41/2 in) DP |
2500-4000 |
3500-5000 |
4500-7000 |
6000-9000 |
Ф127mm(5 in) DP |
2000-3200 |
2800-4500 |
4000-6000 |
5000-8000 |
|
Rated power kW (hp) |
735 (1000 ) |
1100 (1500 ) |
1470 (2000 ) |
2210 (3000 ) |
|
Qty. of motor ×rated power kW (hp) |
2 ×438(537)/ |
2 ×800(1072) |
2 ×800(1072) |
3 ×800(1072) |
|
Rated speed of motor r/min |
880/970 |
970 |
970 |
970 |
|
Dia. of wireline mm (in) |
32 (1 1/2 ) |
35 (1 3/8 ) |
38 (1 1/2 ) |
45 (1 3/4 ) |
|
Max. fastline pull kN |
275 |
340 |
485 |
630 |
|
Main drum size (D×L) mm (in) |
640×1139 |
685×1138 |
770×1361 |
914×1556 |
|
Brake disc size (D×W) mm (in) |
1500×40 |
1600×76 |
1600×76 |
1600×76 |
|
Sand drum size(D×L) mm (in) |
356×1245 |
356×1245 |
356×1245 |
356×1448 |
|
Sand drum capacity (Ф14.5 wireline) m (in) |
4000 (13120 ) |
5000 (16400 ) |
6400 (21000 ) |
7500 (24600 ) |
|
Auxiliary brake |
DS40 |
DS50 |
DS70 |
DS90 |
|
Dimension(L×W×H) mm |
6600×3716×2990 |
6800×4537×2998 |
7670×4585×3197 |
7874×5486×2997 |
|
Weight kg |
40000 |
48000 |
61000 |
70000 |
AC-VFD Drawworks
Features of AC-VF Drawworks
• All bearings are roller bearings with shafts made of alloy steel
• Grooved drum
• Automatic driller
• Main brake is water-cooled or wind-cooled,
• hydraulic disc brake
• Auxiliary brake is dynamic brake
• Single shaft construction
• Transmitted through two-stage gear reducer with manual shift
• Gears lubricated by thin oil
Spec. of AC-VFD Drawworks
Model |
JC40DB |
JC50DB |
JC70DB |
JC90DB |
|
Nominal drilling depth |
Ф114mm(41/2 in) DP |
2500-4000 |
3500-5000 |
4500-7000 |
6000-9000 |
Ф127mm (5 in) DP |
2000-3200 |
2800-4500 |
4000-6000 |
5000-8000 |
|
Rated power kW (hp) |
735 (1000 ) |
1100 (1500 ) |
1470 (2000 ) |
2210 (3000 ) |
|
Qty. of motor ×rated power kW (hp) |
1 ×720 |
2 ×720 |
2 ×1100 |
3 ×1100 |
|
Rated speed of motor r/min |
601 |
660 |
660 |
660 |
|
Dia. of wireline mm (in) |
32 (1 1/4 ) |
35 (1 3/8 ) |
38 (1 1/2 ) |
45 (1 3/4 ) |
|
Max. fastline pull kN |
275 |
340 |
485 |
630 |
|
Main drum size (D×L) mm (in) |
640×1139 |
685×1138 |
770×1439 |
914×1556 |
|
Brake disc size (D×W) mm (in) |
1500×76 |
1600×76 |
1520×76 |
1800×76 |
|
Power of automatic feeding motor |
45(60) |
45(60) |
45(60) |
45(60) |
|
Dimension (L×W×H) mm |
4230×3000×2630 |
5500×3100×2650 |
4570×3240×2700 |
6000×3400×2906 |
|
Weight kg |
18600 |
22500 |
30000 |
42000 |
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