Drawworks

Description

Drawworks is an important part of a drilling rig. Drawworks come in many varieties and can include AC, DC or mechanical operations. The steel cable (drilling line) used in draworks can be used to hoist and lower hundreds of thousands of pounds of weight, including lifting steel pipes out of boreholes. Drawworks also come in a variety of power ratings that can range from 1000 HP to 3000 HP and above.

Drawworks

The drawworks can be divided two types, one is for the mechanical drilling rig and the other is for electric drilling rig.

Features:

1、All bearings are rolling bearings and the shafts are made of alloy steel.

2、The chains are pressure lubricated.

3、The drum is grooved. The low-speed & high-speed ends of drum shaft are equipped with a ventilating air tube clutch. The brake rim is water cooled and the surface is medium- frequency induction hardened which provides long service life.

4、The contours of the sprocket teeth are medium frequency induction hardened. All transmission clutches are of involute spline type.

5、The drawworks can be equipped with either a band or disc brake system.The auxiliary brake can be equipped with either an eddy brake or an EATON brake.

Drawworks for Mechanica Rig

Type	JC20	JC30	JC40	JC50	JC70
Range of Drilling Depth	1200-2000	1600-3000	2500-4000	3500-5000	4500-7000
	1100-1800	1500-2500	2000-3200	2800-4500	4000-6000
Rated PowerKW(hp)	440(600)	550(750)	735(1000)	1100(1500)	1470(2000)
Max.Fastline Pull	200	210	275	340	485
Dia.Of Wire Line	φ29(1 1/8)	φ29(1 1/8)	φ32(1 1/4)	φ35(1 3/8)	φ38(1 1/2)
Size of Drum Groove(Dia.×Length)	φ560×1120(22×44)	φ560×1005.72(22×39 3/5)	φ640×114225 1/4×45)	φ685×1245(27×49)	φ770×1436(30×56 1/2)
Brake Rim (Dia.×Length)	φ1067×267(42×10 1/2)		φ1168×265(46×10 1/2)	φ1270×267(50×10 1/2)	φ1600×76(63×3)
Brake Disc (Dia.×Length)		φ1400×40(55×1 3/5)	φ1500×76(59×3)	φ1600×76(63×3)	φ1600×76(63×3)
Auxiliary Brake	SDF20	FDWS30	FDWS40	DS50	DS70
Overall Dimension (length×width×height)	2450×5500×2545	6140×2835×2562	6600×2890×2670 6450×3553×2429	7000×2955×2780	7930×3194×2930
Weight	17528	24120	29000/28000	7000×2955×2780	43000

 

 

Drawworks for Electric Rig

Type		JC40D	JC50D	JC70D
Range Of Drilling Depth	φ114mm Stem	2500-4000	3500-5000	4500-7000
	φ127mm Stem	2000-3200	2800-4500	4000-6000
Rated Power		735(1000)	1100(1500)	1470(2000)
The Number Of Motor Units×Rated Power		2×438(537)/1×800	2×800(1072)	2×800(1072)
Motor Rated Speed		880/970	970	970
Max.Fastline Pull		275	340	485
Dia.Of Wire Line		φ32 (1 1/4)	φ35 (1 3/8)	φ38 (1 1/2)
Size Of Drum Groove(Dia.×Length)		φ640×1139 (25 1/4×44 7/8)	φ685×1245 (27×44 7/8)	φ770×1361 (30×53 1/2)
Brake Disc (Dia.×Length)		φ1500×76 (59×1 1/2)	φ1600×76 (63×3)	φ1600×76 (63×3)
Auxiliary Brake		DS40	DS50	DS70
Overall Dimension (length×width×height)		6600×3716×2990	6800×4537×2998	7670×4585×3197
Weight		40000	48000	61000