The first CD856A was used for the first time in the Central China Region of the National Rotary Driller Skills Competition

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Apr 02,2012

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[Core Tip] The first National Rotary Driller Skills Competition in the seven regions of the country has reached the second game, after the completion of the Northeast Region, the Central China Region will be held on the 25th, 26th and 27th of this month, the competition will be held at the factory of Zhengzhou Fudao Machinery Equipment Co. The CD856A rotary drilling rig is a practical and economical rotary drilling rig with small torque, which has obtained a number of national utility model patents.

CD856A rotary drilling rig is a new, practical and economical small torque rotary drilling rig developed by Zhengzhou Fudao Machinery Co. The drilling rig has obtained a number of national utility model patents. The key core components of the rig are all international brand hydraulic components, while independent research and development is realized in the main components, which effectively reduces the procurement cost of the rig. This drilling rig is our main product, featuring high construction efficiency, good fuel economy and high reliability, and has been ranked top in the market share of small-torque rotary drilling rigs since its launch for many years.

In terms of mast design, the mast of CD856A rotary drilling rig adopts unique telescopic mast, and this unique telescopic mast makes the whole structure of the machine simple and practical. This unique telescopic mast makes the whole machine structure simple and practical, which not only can quickly realize the transition between transportation and construction state, but also reduce the height of the whole machine by half when stopping operation, saving construction space and greatly increasing the construction security performance.

In terms of slewing support, the CD856A rig adopts a unique adjustable connecting arm between the mast and the chassis, which forms an adjustable front-voltage large triangle structure after connecting with the oil cylinder, ensuring the stability of the whole rig. At the same time, due to this unique structure, the mast can be tilted forward to serve the lifting function, so that it can be self-loading and self-unloading during the drilling rig transfer process; it can also serve as a crane to hoist the reinforcement cage during the construction process, thus making the rig have the function of multi-purpose and saving the transportation cost for the user during the transportation process. The mast and the connecting arm are connected by a cross shaft, which makes the oil cylinder and the mast form a big triangle structure on the left and right. The mast can not only be adjusted back and forth, but also left and right to adjust the width, the structure is simple and reliable. The simple appearance and reliable stability of the whole machine make the whole machine stand out when transporting or operating.

In the winch, the main winch adopts the patent technology certified by the state, with large lifting force and fast lifting speed. Unique reducer brake device, large stopping torque, short reaction time, high reliability performance and convenient maintenance. Up to 80m/min single rope lifting speed, which greatly shortens the lifting and releasing time, improves the construction efficiency and reduces the maintenance cost.

The unique shaking soil function, this major feature of CD856A is also developed through years of construction experience in the research and exploration. Through the high speed up and down reciprocating movement of the drill bit, the friction between the clay and the drill bit is overcome, shortening the unloading time and improving the construction efficiency. Meanwhile, this unique function of shaking soil is different from the traditional rotary drilling rig's dumping soil, which is not only high in efficiency but also simple and convenient in operation.

In terms of power system, the power system adopts original imported Cummins engine with excellent energy-saving design, which makes this type of drilling rig highly reliable in power and good in fuel economy. CD856A rotary drilling rig consumes about 12L of fuel per hour under general geological conditions, saving about 30% of fuel consumption compared with similar products. The power head adopts the original imported two-speed high-torque hydraulic motor with high output torque and high motor stability, which makes the power head have good stratigraphic adaptability in general; the unique lower guide bracket structure of the power head box not only ensures the verticality of the drill pipe during drilling, but also avoids the trouble of dismantling the bracket during transportation, which saves construction time for users.

In summary, the CD856A rotary drilling rig is unique and representative in the whole rotary drilling family, and it has a good reputation in the industry for its good performance and a very high share of rotary drilling rigs in China.

全国首届旋挖钻机机手技能大赛华中分赛区比赛首次采用CD856A进行比赛