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CRD Series Full Casing Drilling Rig

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CRD-200H full-rotation casing drilling rig is a new casing drilling rig that integrates electromechanical and hydraulic control and is developed by Shangong Machinery on the basis of absorbing foreign advanced technology. Fully imported hydraulic system components are used to ensure the reliability of functional control; national three emission standard engines are used to meet the environmental protection requirements of most international countries. This machine has comprehensive functions and covers various domestic and foreign models. It has a variety of speed and torque control, automatic vertical adjustment, cutter head force control, remote line control and other features. Easy to operate, superior and reliable performance.


working principle:

Drill down:

The clamping cylinder pulls down the clamping wedge to clamp and fix the steel tube to the inner ring of the rotary ring gear; the hydraulic motor drives the rotary ring gear through the gear box to drive the rotary cutting of the steel pipe; the pressing cylinder drives the intermediate platform with the drive mechanism , The steel pipe is pressed to the ground and cut; the casing continues to reach the drilling depth.

Pull out:

The upper platform of the top of the oil cylinder is pulled out of the steel pipe; the upper part of the oil cylinder is clamped to clamp the wedge to disengage the steel pipe, and the casing is disassembled section by section to complete the operation.

Compared with the traditional clamping mechanism, the casing can be clamped at any position, and the casing can maintain high vertical accuracy; the greater the pull resistance of the casing, the greater the clamping force becomes.



The main purpose:

① Construction of super deep cast-in-place piles ② Construction of continuous row of piles ③ Removal of underground obstacles ④ Cutting of rocks and rock layers ⑤ Drilling of deep wells


Construction Site:

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Host parameters
unit parameter
Digging caliber
mm Φ1000-Φ2000
Pulling force of casing
KN 3650 (instant 4260)
Casing pressing force
KN 610+ dead weight 255
Pressure stroke
mm 750
Slewing torque 1
KN.m 2975
Slewing torque 2
KN.m 1760
Slewing torque 3
KN.m 1021
Instantaneous turning torque
KN.m 3435
Speed 1
rpm 0.9
Speed 2
rpm 1.6
Speed 3
rpm 2.7
Drilling depth
t 60
Host quality
ton 60
Hydraulic system pressure
Mpa 18
Matching slurry, trachea joint size
Rc 1 1/2 ≈38


System parameters
unit parameter
engine


Engine power
KW / rpm 272/1850
quality
ton 7.5
Power cabinet size
mm 4800 * 2100 * 2110
Rotary variable piston pump


flow
1 / min 288 * 2pcs
pressure
Mpa 32.4 (max34.3)
Pull out


flow
1 / min 320
pressure
Mpa 27.5 (max31.5)
Level adjustment gear pump


flow
1 / min 63
pressure
Mpa 20.6

CRD-200H图片1.bmp



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Copyright: Shanghai Engineering Machinery Factory Co., Ltd. Shanghai ICP No. 11029013-1. Technical Support: Yuan Zhen Network