Pneumatic tube clutch of drawworks for oil and gas drilling rig
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Pneumatic clutch As a kind of friction clutch that uses compressed air as manipulating power source, pneumatic-tyred clutch is widely used in such equipment as oil drilling rig and workover rig, and is also an important part of the drive systems of oil drilling rig and workover rig. The characteristics of pneumatic-tyred clutch are as follows: large transmitted torque, steady joint, easy to install, vibration absorption, compensation to an extent for the relative radial offset and relative angular offset of drive and driven shafts, small inertia of the driven parts, long service life, compact structure and good sealing. Furthermore, due to great resistance to deformation of pneumatic tyres, the service life of such tyres will be shortened when the operating temperature is over 60°C, and they tend to become fragile when the temperature is lower than -20°C. The joint element of a pneumatic clutch is mainly made up of friction disk and friction block and so on. Pneumatic-tyred clutch can be divided into common type and ventilation type in terms of structure.
Technical parameters of air clutches
|
type |
LT300/100 |
LT500/125T |
LT600/125T |
LT700/135CBC |
LT800/135 |
LT700/200 |
LT1070/200 |
|
|
rotata speed |
max |
2332-2667 |
1642-1877 |
1352-1547 |
1198-1450 |
1099-1328 |
1009-1155 |
1315-1504 |
|
rating |
1348-1542 |
949-1085 |
781-894 |
687-881 |
635-768 |
583-668 |
760-869 |
|
|
torsional moment (N.m) |
max |
3080-4030 |
10455-13670 |
14810-19360 |
22350-32660 |
28850-42160 |
75050-98150 |
33080-43270 |
|
rating |
2025-2686 |
6790-9114 |
9875-12908 |
14900-21775 |
19230-28080 |
50020-65440 |
22060-28850 |
|
|
weight(Kg) |
11 |
44 |
53 |
85 |
114 |
67 |
290 |
|
|
working pressure(Mpa) |
0.6—0.9 |
0.6—0.9 |
0.6—0.9 |
0.7—1.0 |
0.7—1.0 |
0.6—0.9 |
0.6—0.9 |
|
|
pneumatic tube cubage (L) |
1.3 |
5.5 |
5.5 |
2—4 |
3.75 |
17 |
30 |
|
|
attrition annulus dia (mm) |
Φ300 |
Φ500 |
Φ600 |
Φ700 |
Φ800 |
Φ700 |
Φ1065 |
|
|
join link |
max dia. |
Φ450 |
Φ720 |
Φ820 |
Φ900 |
Φ1015 |
Φ1400 |
Φ1000 |
|
max width |
115 |
154 |
154 |
176 |
176 |
240 |
240 |
|
|
bolt number and dia. |
12-Φ13H13 | 12-Φ17H13 | 16-Φ17H13 | 20-Φ17H13 | 24-Φ17H13 |
12+4-Φ27+25H4 |
12+4-Φ27+25H4 | |
|
bolt distributing dia. |
Φ430 |
Φ690 |
Φ790 |
Φ870 |
Φ975 |
Φ1350 |
Φ950 |
|
|
air tilet pipe screw thread |
M20×1.5 |
M20×1.5 |
M20×1.5 |
M20×1.5 |
M20×1.5 |
M33 |
||