April 19，“The world's first Shanhe intelligent super rotary drilling rigSWDM1280 promotion meeting”Successfully held。Customer representatives of pile foundation industry from all over the country、 technical specialist 、Nearly 100 media reporters gathered in Ningbo, Zhejiang，The construction process of super rotary drilling rig was observed at the site of Xihoumen Rail-cum-Road Bridge Project of Yongzhou Railway.，Everyone sighed“Super shocking”！

Development of Super Engineering Traction Super Equipment

Sunward Intelligence is the leading enterprise of piling machinery.，Adhering to the concept of leading innovation，Actively respond to the country、Market and customer needs，Developed all kinds of high-end、Specialization、Complete set of innovative products。Coincidentally，It is the super project of Xihoumen Rail-cum-Road Bridge on Yongzhou Railway.，Traction of Sunward Intelligent Super Rotary Drilling RigSWDMThe development of 1280。

Xihoumen Rail-cum-Road Bridge is the world's largest rail-cum-road bridge，It has set many records at home and abroad.，It is the key control project of Yongzhou Railway.，The scale of the project is large、The bridge structure is novel、High technology content，It is a super cross-sea project that challenges the limits.，The engineering environment has“The wind is strong、The waves are high、Depth of water、The current is rapid、Bare rock”Characteristic。

July 2020，Sunward Intelligence and China Railway Bridge Engineering Bureau、Wuhan Lecheng Team aims at the construction environment of pile foundation of Xihoumen Rail-cum-Road Bridge、Pile type、Stratigraphic characteristics，Combine“Deep and medium passage”Construction experience of offshore pile foundation project，Start research on super rotary drilling rig and construction technology，Twelve expert technical workshops were held in the early part of the programme。

January 2022，Under the leadership of He Qinghua, chief expert of Sunward Intelligence，The R & D team has conquered the construction stability of large-scale equipment.、Convenience of loading, unloading and transportation、Riveting and welding deformation of oversize parts、There are many technical difficulties in the machining accuracy of super-large machined parts.，Super rotary drilling rigSWDM1280 officially offline。

How awesome is the super rotary drilling rig?？

Super rotary drilling rigSWDM1280 The maximum hole diameter can reach 7 meters.，The maximum hole depth can reach 176 meters.，With the powerful leading R & D and innovation capability of Sunward Intelligence,，The equipment is designed for large bridge pile foundation.、Super deep、Rock-socketed、Disassembly, assembly, transportation, etc.，It has created many key core technologies.，It has obtained nearly 50 invention patents and utility model patents.。

At the promotion meeting，Wu Bin, an engineer of Sunward Intelligent Engineering Method, introduced in detail the technological innovation of the super rotary drilling rig.。

 

1

Aiming at the difficulty of disassembling super-large equipment、Difficulty in transportation，Double-pin type power pin shaft is adopted，Realize automatic loading and unloading of crawler edge beam，Construction is stable，Efficient transition。

 

2

For drilling in superhard rock formation，The problem that the transient large impact load causes the swing of the rotary platform to affect the verticality of the hole-forming，Braking force enhancement technology of large inertia slewing platform is developed.，Improving the stability of slewing braking and the precision of pore-forming of large piling machinery。

 

3

      For oversize、Reliability and Machining Accuracy of Super Long Drill Pipe，Initiated five-key hexagonal square head drill pipe，Reliable anti-bending and anti-torsion force transmission；Fine drawn seamless steel tube and special radian key bar are selected.，It breaks through the straightness control technology of large-length telescopic drill rod key.，The straightness reaches 3mmWithin。

 

4

Aim at that problems of the construction reliability and the drill efficiency of the ultra-large and ultra-deep rock-socketed pilot，Stepwise Drilling Technology with Inner Ring Positioning Hob，Self-weight pressurization，Drilling is smooth、The drilling verticality is high，Drilling efficiency increased by more than 1 times。

 

5

 

Aim at that problem of engineering adaptability of large-scale pile construction machinery，Adopt modular design concept，Equipped with two sets of engine hydraulic systems，The dynamic system can be divided and combined.、Chassis modular design can be wide or narrow、Mast modular design can be high or low，Adapt to different engineering environment and pile type requirements。

 

6

 

Construction cost and reliability of large piling machinery，Equipped with large diameter、Long length reel and 66mmLarge diameter wire rope，Realize 5-layer machine locking rod single-row rope，It has a huge lifting capacity.，But also greatly prolong that service life of the steel wire rope.。

 

It is with the support of these advanced technologies.，Sunward Intelligent Super Rotary Drilling Rig has the strength to conquer super-large deep piles on the sea.。

Super Equipment Support and Super Engineering Realization

January 2023，Sunward Intelligent Super Rotary Drilling RigSWDM1280 Xihoumen Rail-cum-Road Bridge on Yongzhou Railway； February ，With advanced technology、Stable performance and reasonable construction method，Overcome“The wind is strong、The waves are high、Depth of water、The current is rapid、Bare rock”And other difficult problems，Spud at the first pile of Pier 6，Become the world's largest rotary drilling rig in actual combat，Breaking the Sunward IntelligenceSWDM1000 records of rotary drilling rig。

“The foundation of No.6 pier is 8 bored piles.，Design pile diameter 4.5 meters，The design hole depth is about 60m.，The depth from the construction plane to the seabed surface is about 25m.，The thickness of the overburden within the pier foundation is about 10-15 meters，Into the weak、The slightly weathered layer is about 20m.。4.Three-stage expanding drilling technology is adopted for 5m pile diameter，The drilling time of single pile is only about 54 hours.，While ensuring accuracy，Efficiency has also been improved.。”Zhu Jianxin, Vice General Manager of Sunward Intelligence, introduced the scene.，At present，SWDM1280 created the world record of the largest hole diameter of the rotary drilling rig.。

Guo Chuanxin, Secretary-General of Piling Machinery Branch of China Construction Machinery Society, said.，On-site observation of Shanhe Intelligent Super Rotary Drilling RigSWDM1280 Construction operations，This is the world's largest rotary drilling rig currently under construction.，The operation scene is very shocking.！Really realized the super equipment to help build super projects！

Wu Kunxue, Director of Material and Machinery Department of Yongzhou Railway Xihoumen Rail-cum-Road Bridge Project Department of China Railway Bridge Bureau, also gave a detailed project introduction to the guests who participated in the event.，He said：“To do a good job, one must first sharpen his tools.。Considering the difficulty of bored pile construction，Need the help of large equipment，We jointly develop with Sunward IntelligenceSWDM1280 rotary drilling rig，At 4.5 meters of construction reflects the strength，It has been approved by our Bridge Bureau.。”

At the same time，Yang Tianming, general manager of Wuhan Lecheng Construction Engineering Co., Ltd.：“From the bond to the present，I really felt the butler service.，From equipment manufacturing，To the process method，Sunward has always been with us.、Helps us。Products of Sunward Intelligence、Technology，Especially Mr. He, the industry leader.，Gave us full confidence.。Last year, Sunward IntelligenceSWDMThe 1000 rotary drilling rig has played a great role in the construction of Yanji Yangtze River Bridge.，This yearSWDM1280 Rotary Drilling Rig Continues to Help Build Xihoumen Rail-cum-Road Bridge，Piling Machinery Benchmarking Works to be Built。”

 

As the leading enterprise of piling machinery，Sunward Intelligence has been developing and innovating in recent years.，Transform and upgrade traditional products with high and new technology，A super static pile driver is developed.、Super pile frame、Super rotary drilling rig and other super equipment，It has been applied in super projects at home and abroad.，Occupying nearly one-third of the market share，Leading the piling industry towards standardization、Move forward in the direction of centralization。

Future，Sunward Intelligence will further increase R & D investment，Strive to achieve autonomy and controllability in core key technologies，At the same time, more energy will be devoted to the research of construction methods and the accurate grasp of user needs.，Do a good job in every link of the product with the spirit of excellence.，Repay consumers with better products and services，Leading national brands to better enter the international arena，To make positive contributions to the development of piling machinery。