疯狂赛车

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Interlock Kelly Bar For SANY

疯狂赛车SANY Interlock Kelly Bar is composed by interlock Kelly bar and full multi-interlock Kelly bar. For this type of Kelly bar , the first section is 3-keys interlock type, inner few sections are multi-type step keys , the outer keys are three sections three set of concave and convex form ....

Detailed description

SANY Interlock Kelly Bar is composed by interlock Kelly bar and full multi-interlock Kelly bar.

疯狂赛车For this type of Kelly bar , the first section is 3-keys interlock type, inner  few sections are multi-type step keys , the outer keys are three sections three set of concave and convex form .

疯狂赛车Combined-interlock Kelly bar is based on domestic rig configuration and condition demand, combined with the home and abroad advanced manufacture technology, supporting domestic and foreign rotary piling rig.

This type Kelly bar have been applied for patent, the patent No. is 201420542676.9


No.

OD

Section

Way of crowding

Length of per section(m)

Drill depthTorque

1

¢440

3

4

5

疯狂赛车(interlock-type)

9-15

24 – 55

220-260

2

¢470(482)

3

4

5

疯狂赛车(interlock-type)

9-15

24 – 70

230-280

3

¢580

3

4

5

疯狂赛车(interlock-type)

9-15

24 – 70

260-360

4

¢530(540)

3

4

5

(interlock-type)

9-18

24 – 85

360-420

5

¢575(580)

3

4

5

疯狂赛车(interlock-type)

9-18

24 – 85

420-460

6

¢630

3

4

5

(interlock-type)

9-20

24 – 92

460-550


When the driving force rotates, the internal key of the driving sets or the internal key of the kelly bar rotate to the external key of the large concave tine and formed a Kai-type pressuring point. Driving force head send pressure to the drill head, it is formed a mechanical locking, drill bit reversal upgrade smoothly before unlocking. The transmission pressure of this drill pipe is better for hard or soft layer to drill, and this form of drill pipe needs driving force head to move up and down when drilling in hard layer. It transfer pressure after find the large concave meshing tine in the external. At present , mechanical locking and pressurizng drill pipe is usually formed by three sections疯狂赛车four sections and five sections ,with the depth in the range of 36-80.


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