August 10，On the surface of Hangzhou Bay，Sunward Intelligent Super Rotary Drilling RigSWDM800HOfficially launched，World's Longest Sea-Crossing High-Speed Railway Bridge——The first bored pile of the main pylon pier of the North Channel Bridge of the Hangzhou Bay Sea-Crossing Railway Bridge Project was successfully drilled，It marks a breakthrough in the key control project of the Zhejiang section of the Sujiayong Railway.。

A clear rainbow across the sea

Hangzhou Bay Sea-Crossing High-Speed Railway Bridge is 29 in total length.2 km，Including North、Medium、South three channel bridges and levees、In the sea、Approach bridge in shoal area，It is a super-long high-speed railway bridge cluster project.。

North Channel Bridge of Hangzhou Bay Sea-Crossing High-Speed Railway Bridge，The main span is 450 meters.，After completion, it will become the world's largest span ballastless track double-tower double-cable plane steel box.—Steel Truss Composite Girder Cable-stayed Bridge。At that time，It takes about 10 minutes to cross the Hangzhou Bay by high-speed rail.。

Innovation leads，Break through the waves

With the rapid development of the national economy and the acceleration of the urbanization process.，The construction machinery industry has also ushered in development opportunities.。Super Engineering Traction Super Equipment，Super Equipment Helps Build Super Project，Time after time, technological innovation has solved a difficult construction problem.，It also shows the power of Made in China again and again.。

This time, it was the Hangzhou Bay Cross-sea High-speed Railway Bridge Project that pulled the Sunward Intelligent Super Rotary Drilling Rig.SWDM800HThe development of。The North Channel Bridge of the project is located at the estuary of Qiantang River.，The construction is world-renowned.“Qiantang River tide”Influence，Tidal levels up to 6.13 meters，The minimum is only-3.76 meters，Impact up to 2.7 tons，Due to the thick silt and sand layers in the formation and the drilling depth of 151m，Belong to ultra-deep drilling depth，Brin great difficulty to hole forming and pile for，Post grouting of pile foundation is adopted for the pile body，The construction is even more difficult.，Only the most powerful equipment，Cooperate with the strongest construction method，Only in this way can we overcome this major and difficult project.。

To solve the construction problem of developing super equipment in just 40 days，After receiving this project, the R & D team of Sunward Intelligence，Direct accommodation in Shanhe Industrial City，And spent many sleepless nights.，After repeated discussions with China Railway Bridge Bureau，Finally, hard work pays off，Successfully developed the maximum drilling diameter of 4.5 meters、Drilling depth up to 155 metersSWDM800HLarge rotary drilling rig。

The equipment uses the industry's first large inertia rotary platform braking force enhancement technology.、Innovative technologies such as modular design，It not only ensures the stability of the drilling machine in the drilling process,，Ensure that the verticality error of the drill hole is not greater than 1/400，A mast angle inclination sensor can also be arranged at the same time.，Real-time monitoring of borehole verticality，Fully competent for the construction task of Hangzhou Bay Sea-Crossing High-speed Railway Bridge。

SWDM800HProduct highlights

One

Stable drilling

The industry's first large inertia rotary platform braking force enhancement technology，Olves the problems of swing of the rotary platform and low hole forming precision caused by transient large impact load。

II

Strong into the rock

Equipped with high-power engine、Large displacement main pump、Four-motor power head，Reasonable power matching of power system，Powerful、The torque is large、Fast，High drilling pressure、Large mass complete machine，Ensure strong rock entry。

Three

Economical and efficient

Large diameter wire rope of main winch and large pulling force，Large footage in single cycle、High efficiency。No need to disassemble and assemble the pressurized steel wire rope during transfer transportation；Large-diameter drum single-layer rope arrangement，The service life of the main coil steel wire rope is prolonged by 50%。Pecial self-loading and self-unloading crawler chassis，Stable and reliable、Convenient loading and unloading。

Four

Intelligent control

Panoramic surveillance、Audible and visual alarm、Emergency stop button、Bottom protection、Constant speed cruise；Integrated intelligent operating system，Comfortable and intuitive operation；Shanhe Xiangyun Information System，Synchronous transmission of construction data，Real-time monitoring of equipment status。

In recent years，Sunward Intelligence closely meets the needs of the construction project side，Customized development，Develop a batch of super equipment with powerful performance，Help the construction of super project，That includesSWDM1280 Super Rotary Drilling Rig、SWDM800HSuper rotary drilling rig, etc。

Future，Sunward Intelligence will continue to strive to achieve self-control in core key technologies.，Study on the Construction Method of Cooperative Excelsior，Give full play to the advantages of leading innovation，To make positive contributions to the development of piling machinery，Escort for National Construction。