The maximum output torque is up to 1280kN.m, the maximum drilling diameter can reach 7 meters, the depth exceeds 170 meters, and the maximum walking weight of the whole equipment reaches 470 tons, which is equivalent to nearly 400 cars... On January 7, 2022, Sunward Intelligent Autonomous The developed SWDM1280 rotary drilling rig rolled off the production line. It successfully broke the industry record, and its main technical parameters reached the highest level in the world.

Born for super engineering

This SWDM1280 rotary drilling rig independently developed by Sunward Intelligent is not only another outstanding achievement of its "pilot innovation", it is also an important tool for super engineering.

With the implementation of a number of major national infrastructure projects, the market urgently needs super rotary drilling rigs with good hole quality and high construction efficiency. However, the current pile foundation construction equipment is difficult to meet the requirements of ultra-large diameter deep hole embedded rock drilling. It is in this context that this "super rotary digging" came into being.

"In 2010, we took the lead in developing the smallest SWDM40 rotary drilling rig for civil construction projects in China; since then, we have been cherishing the dream of being the world's largest rotary drilling rig." The developers said, they I have been waiting for the R&D and innovation of a super engineering traction equipment, and it just happened in 2020 to usher in the construction demand for the ultra-large diameter deep hole embedded rock formation of the cross-sea bridge, and the "super rotary excavation" project was also launched.

Beginning in July 2020, the Sunward Intelligent R&D team under the leadership of the chairman and chief expert He Qinghua began to develop research and development work on multi-functional rotary drilling rigs. It has conducted as many as 12 expert technical seminars and has overcome many problems. For a technical difficulty, the equipment will complete the internal commissioning of the first product at the end of December 2021, and will soon be shipped to the construction site after reaching the inspection standards.

"Its maximum drilling diameter can reach 7 meters, and the drilling depth is more than 170 meters. It can meet the requirements of super large diameter deep hole embedded rock pile formation, and can be applied to the pile foundation construction of super projects such as sea-crossing bridges." R&D staff introduced , This equipment weight is equivalent to nearly 400 cars, its torque is as high as 1280kN.m, and its main technical parameters have set a new world record.

Multiple core technology blessings

As a super-large equipment in the field of underground engineering equipment, the SWDM1280 rotary drilling rig has significant advantages in terms of operating range and construction efficiency. With advanced technology, it overcomes the problems caused by "large size" and complex application conditions. All performances are maintained at the leading level in the industry.

In order to solve the stability problems faced in the construction process of "super rotary digging". The Sunward Intelligent R&D team applied He Qinghua’s first patented technology of “large inertia slewing brake and auxiliary vehicle stabilization device” to the equipment, “by installing four top cylinders between getting on and off, similar to the brake system of a car When drilling is equipped, these four cylinders will limit the relative movement of the joints and ensure the stability of the construction.” The R&D staff explained.

At the same time, in order to better adapt to the construction of ultra-deep and large-diameter rock drilling, the SWDM1280 rotary drilling rig adopts the world’s first five-key coordination to strengthen large-diameter drill pipes. Compared with traditional three-key drill pipes, it can meet the requirements of high-torque drilling. At the same time, it reduces the load of the driving key, and the load-carrying capacity is increased by 60% compared with the same length of drill pipe on the market.

According to the research and development personnel, in order to deal with special working conditions and dangerous working conditions, the SWDM1280 rotary drilling rig also adopts an all-electric hydraulic control system, which can be equipped with a short-distance remote control and a 5G remote operation cabin to realize unmanned operation and combined with remote multi-angle construction Monitoring makes the operator feel as if he is on the scene. At the same time, using the remote control function, the operator can remotely operate the machine away from the oversized equipment to ensure personal safety.

Like all super large equipment, the SWDM1280 rotary drilling rig also faces the problems of overweight, super wide, super high during transportation, and difficulty in disassembly and assembly on site. In this regard, the R&D personnel creatively adopted the self-loading and self-unloading crawler chassis technology, and designed the side beam double-pin automatic latch structure, which can quickly disassemble the two sides of the chassis and the platform, simplify the process of disassembly and assembly, and average work efficiency. Doubled, not only saves a lot of manpower, but also saves the rental cost of large tonnage cranes.

In addition to these, in order to further optimize performance, SWDM1280 rotary drilling rig has made breakthroughs in power system, painting, welding, etc., demonstrating the scientific and technological innovation strength of Daguo Heavy Equipment.

Super Rotary Digging Family

In fact, Sunward has accumulated more than 20 years of experience in the research and development of rotary drilling rigs.

In 2001, Sunward Intelligent began to develop the first SWDM20 rotary drilling rig with self-made telescopic chassis technology. At the same time, in combination with the 863 project "R&D and industrialization of computer-controlled high-performance rotary drilling rigs", it independently developed a rotary drilling rig based on CAN bus. The electronic control system fills the domestic gap.

After 2003, the R&D team carried out a large number of iterative upgrades, and high-quality products emerged one after another, such as the star products SWDM160H, SWDM300H, SWDM360H. At the same time, a series of small and micro to super large models were formed, with torque ranging from 40 to 1280 covering dozens of models.

In 2017, Sunward Intelligent developed the SWDM600W, the world's largest walking rotary drilling rig, to conduct in-depth and systematic research on the construction technology and application of ultra-large diameter deep hole pile foundations.

For a long time, Sunward Intelligent SWDM450, SWDM550, SWDM600 and many other large rotary drilling rig products have been praised by customers in the industry. Many major projects have Sunward Intelligent brand. At the same time, the market share of Sunward's intelligent rotary drilling rig has also entered the first echelon in China.

Up to now, the spectrum of Sunward's intelligent rotary drilling models has covered models SWDM40 to SWDM1280. The model spectrum is complete. It can meet various conditions such as unweathered rock construction, low headroom construction, high latitude and cold zone construction, offshore construction, etc., except for one With a series of innovative equipment, the Sunward Intelligent R&D team also provides customers with a complete set of construction solutions for the construction requirements of different projects in response to how customers choose machines and adopt the best construction methods.

Through collaborative innovation of equipment, engineering and construction methods, and guided by difficult projects, a series of product clusters covering basic building equipment and underground space equipment and a complete set of solutions for underground engineering with high added value and various types have been formed, which has become an underground engineering leading the development of the industry Equipment experts.

The launch of larger models this time not only expands the models of Sunward rotary drilling rigs, but also further enhances Sunward’s brand influence. In the next stage, Sunward Intelligent will carry out design optimization and construction method research for super rotary drilling rigs, subdivide models according to market requirements, and will launch customized products for different customers and different construction scenarios to create a "super rotary drilling family" .Editor/Ma Xue