After some intense preparations, more than a dozen Jiaolong underwater probes were once again equipped with the huge hands of human manipulators.

Unlike before, this time, the treatment received by Zhengxin's team was significantly improved, and those underwater workers were busy helping out, shouting at Zhengxin's technicians and engineers. Even, in the command cabin of 35D, an area was set up for Zhengxin's engineers and Li Fanyu Liuqing and others, who were responsible for observing the underwater construction situation.

On the side of the work boat, the CCTV news reporters who got the order were also fully armed, looking for an opportunity to ask questions about Zhengxin's technicians and Liu Qing and others, recording everything about the project throughout the process.

While Zhengxin is busy here, the hydraulic lifting system there is also undergoing post-launch inspection in order to carry out the final underwater assembly.

The hydro-powered mining system is actually a set of things that make full use of the water pressure on the seabed.

The main structure consists of a mechanical composite collector, a mine lifting and transportation system, a measurement and control system, a surface support buoyancy system and a large underwater auxiliary propulsion system.

It's complicated to say, but it's not that hard to understand.

The mechanical composite collector is like a large shovel, which collects manganese nodule ore under water.

Although it is called a "machine", it is much larger than the ordinary "machine". The Russian Nimiyan-type acquisition system used in the 15220 project is composed of two mechanical composite collectors connected in parallel.

How big is this thing?

The size of a single collector is fifteen meters long, five meters wide, and three meters high!

At the bottom of the collector, there are 34 sets of cylindrical, titanium alloy runner grapples, which are like ancient Chinese waterwheels, using the high negative pressure drive under water to rotate, shoveling everything they encounter into slag.

Then, the debris is collected by the collector and transported directly to the ore lifting system through the negative pressure pipeline, relying on the strong pressure of the seabed, and finally sprayed onto the mother ship on the surface of the water through the measurement and control system!

Because the length of this custom-made Nimiyang hydraulic lifting system is too large, it is difficult to actually operate the underwater after assembling it on the surface of the sea.

And because it is fully customized, if something goes wrong in each link and the system is damaged, then the replacement parts and repair time will be wasted too much.

So, to be on the safe side. The assembly and docking of the collector, auxiliary thruster, and poplar mine system can only be completed underwater.

After some preparation, the work on the sea surface was completely completed.

After receiving the reports prepared by all the working groups, Lu Ming gave the order for the construction.

"Brother Fan, damn it, this looks so exciting! With such a big job, I always feel a special surging feeling. ”

Li Fanyu also nodded as he looked at the huge mechanical parts of the sea that stretched for four or five large work boats, as well as the underwater transportation pipelines that were full of kilometers each.

"Yes, technology is constantly advancing, and humans can now do a lot of things that were unimaginable before. ”

"Hehe, Brother Fan, are you boasting!" Liu Qing pointed to the Jiaolong underwater probe that had already begun to dive on the water, and said with a smile.

"Uh," Li Fanyu shook his head, "Hehe, of course, this project would never have been possible without us." But think about it in other words, Mao Zi's set of hydraulic lifting equipment is also a brain-breaking thing. Aoko, the human hand robotic arm is a tool, and I'm wondering, with such a set of tools, can we accomplish more things that we didn't dare to think of before?"

Liu Qing nodded thoughtfully, "Brother Fan, don't worry about this." The modification of the mechanical god has now begun, and with the addition of the human hand robotic arm, our manufacturing strength will definitely be increased by an order of magnitude. In the next operation of the power company, we will definitely develop to a more steel-framed place. ”

Li Fanyu nodded, smiled and patted Liu Qing's shoulder.

Just after the two of them were talking, more than a dozen Jiaolong underwater probes had already dived to the predetermined position. According to the plan developed by Russian experts, the joint construction team and the Zhengxin technical team, the assembly process of the entire hydraulic lifting system extends from the water surface downward.

Taking into account the underwater environment and the difficulty of assembly, the experts of the Russian delivery gave an estimate of 40 minutes for the assembly time of the first stage of the automatic control system and buoyancy body, 2 hours for the second stage of the ore lifting system, and 2 hours and 40 minutes for the assembly time of the third stage of the submarine hydraulic composite mechanical acquisition system.

For the entire assembly project, the combined construction time will reach six hours!

This has made many people deeply worried about the underwater stability of the Jiaolong and the pump core robotic arm.

"Dong Li, is there any problem with your robotic arm? We have been preparing this final assembly plan for more than two months."

In the command cabin, Xing Dongliang from the Maritime Survey Bureau walked in front of Li Fanyu and asked curtly.

After all, Zhengxin removed all the mechanical arms before, using the reason that the design flaws and maybe the drama was too much, and many people in the joint construction team believed it to be true.

Seeing a group of people looking at him with the same gaze as Xing Dongliang, Li Fanyu smiled slightly.

"Don't worry, if there is a problem that delays the entire assembly process, then I can guarantee that it will never appear on the robotic arm. ”

Under the hull of the working mother ship, underwater welders are in full swing assembling buoyancy fixing facilities. With a large number of air bubbles, the underwater welding of the buoyancy body is unfolding.

And at a depth of about 200 meters below them, fifteen Jiaolong underwater probes have begun to dock and assemble the automatic control system!

The whole assembly work needs to be riveted and threaded to complete one main interface and 22 fixed positions.

Fifteen Jiaolong ships were working in pairs at this time, docking the hose, which was three meters in diameter, to the interface of the working mother ship. From the bottom of the water, the fifteen Jiaolong were like a small group of ants, carrying the prey that was several times larger than its own body size back to the nest!

Under the extraordinary precision, the threads of the two large interfaces were successfully docked after only one use!

And those 22 fixing bolts are not worth mentioning for the Jiaolong and the robotic arm, which only have a working depth of 200 meters!

Just fifteen minutes later, the report of the underwater working group was received in the 35D command module;

"The first docking work has been completed!"