SANY's introduction of rotary drilling rig customers praise

Trinity launches rotary drilling rig

Large depth rock piles <br> business <br> increasing demand in recent years, rotary drilling holes into the pile construction method matures into its hole high quality, high efficiency characteristics for super high-rise building toward the deep, into oversized rock The development of the pile design lays the technical foundation, which makes the business demands of large and deep rock piles grow continuously.
In this context, a pile with a diameter of 4.5 meters and a pile depth of 140 meters came into being. It would be like to drill a 50-story deep underground rock pile with a diameter equivalent to the length of an ordinary sedan. The so-called “Easy to get into the earth is difficult”, this kind of large and deep rock pile construction is undoubtedly a great challenge to the performance of the equipment.
“At present, there are few manufacturers that can produce large-scale rotary drilling rigs in China.” Ding Shengju, executive vice president of Beijing Sany Heavy Machinery, said that the production of large-scale rotary drilling rigs requires a strong R&D and manufacturing system as support. In order to meet the customer's demand for the “super large, ultra-deep, and ultra-difficult” pile foundation construction project, Beijing Sany Heavy Machinery put the idea of ​​developing the SR630RC8 rotary drilling rig on the agenda.
In-depth research, tailored <br> Rotary Drilling "requires large diameter drill into the rock has large torque, requires long drill ultra-deep, and can meet the large torque conditions sufficient safety factor." Project Leader Zhang Shiping, vice president of the Beijing Sany Heavy Machinery Research Institute, said that the entire facility is nearly 35 meters high and weighs more than 200 tons. The stability of drilling rig construction must also be overcome.
There are many problems to be solved, but the customer's start date is set at the beginning of July. In order to deliver on time, the entire team did not care to rest and devoted themselves to the project.
In order to understand the geological requirements, the R&D team visited the site of the customer several times to conduct in-depth investigations, communicated with customers in detail, and incorporated the results of the investigation into the design. The R&D personnel not only targeted the actual working conditions such as large backfill, solitary rock, and deep rock into specific requirements, but also ensured that the equipment could meet the customer's positioning requirements in the next 3 to 5 years.
Many domestic steel mills have also appeared in the R&D team of Sany. After many choices, they found high-strength drill pipe materials with a strength of more than 800 MPa and good welding performance. In order to meet the stability requirements, the overall program has undergone more than 10 rounds of review, and finally adopted a modular interface design program to meet the needs of deep piles.
After hard work, the SR630RC8 rotary drilling rig was again developed by Sany and delivered to customers on June 30.
Go beyond benchmarks to save costs for customers
According to reports, the SR630RC8 rotary drilling rig has a maximum drilling diameter of 4.5 meters, a maximum drilling depth of 140 meters and a maximum output torque of 630 kN.m. The technical parameters have surpassed the benchmark products of the world's large-scale rotary drilling rigs and reached a new height for the production of large rotary drilling rigs in China.
At the same time, double triangular structure, multiple control of the power head, multi-speed control of the pressurizing system and other technologies have enabled the SR630RC8 to achieve super-strong rock entry, large diameter, and large drilling depth, while ensuring high stability and high efficiency operation of the drilling rig. Improve the convenience of construction. The equipment is suitable for the construction of super high-rise buildings with a height of over 100 meters. It can solve the pile foundation construction problems such as large backfilling of large-diameter ultra-deep piles, solitary rock, and deep rock entry.
At present, the SR630RC8 rotary drilling rig has been operating in Shenzhen for several days. Its performance is praised by customers.
“As long as 31 equipment is added, the project can be completed on schedule. This saves me a lot of costs.” Chen Zengqi, a user of the Shenzhen pile foundation construction market, affirmed the quality of Trinity products. At present, he already owns 7 sets of Trinity. Machine equipment, equipment, total investment billions. Chen Zengqi said that the three-for-one machine can always accomplish difficult projects. He is also very satisfied with the support of the Sany engineering method. “In Shenzhen, there is no geology and operating conditions that the Trinity products cannot adapt to, which greatly enhances my trust in Sany. Moreover, the engineering support provided by Sany to the users is also second to none in the pile-working machinery industry.” Click to enter SANY Online Purchase page )