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ZJD3500/250C Full Hydraulic Drilling Rig – RCD Method - From China CEEN
ZJD3500/250C Full Hydraulic Drilling Rig – RCD Method

ZJD3500/250C Full Hydraulic Drilling Rig – RCD Method

RCD Machine is a large bored equipment of soil foundation works for bridges, high-rise and metro construction. the vertical excavation work by means of the full hydraulic power swivel with rotary bits.
Drill string with special drill bit is used for drilling in the borehole, and the sand-stone and mud are flushed out through the drill pipe rods by the pressure difference in the hole.

 

Features

Working Principle

Parameters

Application

1.The maximum drilling diameter and depth are 3.5M and 150M, the biggest embedded rock strength can reach 200MPA.
2, High efficiency and energy saving, full hydraulic stepless speed change, reliable and stable transmission performance.
3, Large torque, large lifting force, especially suitable for complicated stratum such as gravel, hard rock etc.
4, The suspension tiltable power head and tiltable frame with compact and reasonable structure, easy to assembly and disassembly.
5, Large diameter drill pipe, using high-pressure gas lift seal device and advanced RCD method.
6, Optional additional weight to increase pressure in hole bottom, ensure the verticality of the hole.
7, Optional stabilizer to assist drilling, effectively control the verticality and hole diameter precision, reduce drilling tool wear.
8, Simple operation, low maintenance cost, comfortable environment of operation room, optional installation of temperature adjusting device.
9. High cost efficiency. the overall drilling costs can actually be reduced by up to 40% when using RCD, safety and requires fewer man hours, requires less water than other method.
10. Easy to collect samples. Any depth of the sample will help to study and analysis of geological condition.

Scope of Application

Mainly used for drilling construction of pile foundation and vertical well with large diameter and depth in complex geology.
Widely applied in drilling construction of large building on land, port and pier, river levee protection,and river, lake, sea bridge pile foundation, and it’s the preferred model of ultra-large diameter pile foundation construction.

Working Schematic

 

First-class quality, First-class service, First-class technology

ZJD3500/250C full hydraulic drilling rig is favored by domestic and foreign customers with strong operation capability, advanced technology, high cost performance, timely and thoughtful service, and won industry praise. Compared with other piling equipment, has the advantages of low investment, high efficiency, quick recovery and so on, is an ideal choice for pile foundation construction users.

 

Product model: ZJD3500/250C

Name

Maximum drilling diameter

Maximum drilling depth

Maximum lifting force

Guide frame tilt angle

Power head tilt angle

Crane

Total Weight

Dimension

Parameters

Ф3.5(M)

150(M)

150(T)

25(Degree)

55(Degree)

1.5(T)

37(T)

4.65*4.51*7.53(M)

Name

Rotate speed and torque of power head

Drill Pipe Specifications

Power Supply

Total power

Parameters

0~8RPM

25T•M

0~21RPM

10T•M

Ф377*22*3000

3Phase380V50HZ

246KW

Slag discharge method

Air-lift reverse circulation

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Hubei Huangshi Edong Bridge                                                                                                              Hunan Dayue Dongting Lake Bridge

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Ningbo Xiangshan Harbor Bridge                                                                                    The Hong Kong Zhuhai Macao cross sea Bridge

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Zhoushan Jintang Bridge                                                                                                 Yueqing Bay Bridge

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Fujian Pingtan Strait highway Bridge                                                                                            Guangdong Jiangmen Bridge

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Hangzhou Bay cross sea Bridge