Doomsday Bunker Upgrade

Manufacturing a shield machine is actually not as difficult as many think, because the world's first shield machine was born two hundred years ago at the end of the 18th century. Compared with institutions, there are no high-tech parts.

However, although the early shield machine has a simple structure and no high-tech places, it is the originator of today's modern shield machine and the source of its principle.

Chen Xin wants to build a shield machine by himself, unless he finds another way to design from scratch, otherwise, he can't get around the principle of the shield machine that has laid the foundation more than two hundred years ago.

The principle of the shield machine is not complicated. The main principle is to build a "shield" to protect the tunnel and resist the collapse of the tunnel while the roadheader is driving forward, that is, while digging and repairing.

Of course, with the advancement of science and technology, although the principle of the current shield machine is still the same, some large or super large shield machines no longer need to build a "shield" during the excavation process. Tunnel repaired, convenient and quick.

The basic principle of the shield machine comes from a marine organism, the ship maggot, which continuously digs on the wood, and secretes mucus during the digging process to protect the wood around its body from being corroded and swelled by seawater and damaged. .

So for Chen Xin, who doesn't need a regular shield machine, he actually just needs to make a machine that can quickly dig in the snow, and support the excavated tunnel so that it does not collapse before the pipeline construction is completed.

And both of these things are not difficult to do.

Snow is not condensed ice. Although it has a certain hardness, it is much easier to excavate than soil. Moreover, the interior of the snow is uniform in texture, and there is no complex structure. There is no need to consider the rock formations or other materials encountered during the excavation process. Problems with complex geological structures.

As for the second point, it is easier to solve. With the current ambient temperature, it is only necessary to slightly heat the excavated tunnel wall during the excavation process, so that the snow on the tunnel wall melts and condenses quickly, and a layer of ice can be constructed. The shell is used to support and protect the tunnel from collapsing.

After all, it's just snow, not a complex geological structure. A layer of ice shell support is enough.

When these two points are clarified, primary school students may not be able to make a shield machine that can be used, but middle school students with stronger hands-on ability can complete this design.

A cylinder is used as the main structure, and a relatively hard metal is used to make a fan blade or drill in the front. A circle of electric heating wires is placed on the outer shell to melt snow and keep the interior warm. This thing is basically completed and can be used for construction. demand.

As for the rest, it is nothing more than optimizing the internal mechanical structure and adding a little auxiliary function.

For example, the front fan blade or drill bit can be shaken manually, or a motor can be added to make it mechanically powered. The excavated snow can be transported manually or mechanically. The whole shield machine is fully automatic, as long as it is put into the snow, it will dig itself and complete the entire construction.

It's just that Chen Xin was a little hesitant about how big a device he wanted to build.

It is a simple and rude way to build a large, directly dig tunnel, and then the workers go in to erect the pipeline, and in this way, the machine does not need to be too complicated and advanced, and it is enough to be able to drive quickly.

However, in this case, the construction speed will be relatively slow. After all, the larger the excavation surface is, the larger the excavation surface will be, the amount of snow that needs to be excavated will be doubled, and the construction period will be longer.

As for making a small one, or simply having only the thickness of the pipe, and digging and connecting the pipe, this will undoubtedly save a lot of trouble.

It's just relative, if you build a small shield machine, the technical content will undoubtedly be improved a lot.

After thinking about it, Chen Xin weighed the advantages and disadvantages of the two and chose a small shield machine.

After all, for him, improving the technical content is the easiest thing.

With a multi-functional mechanical arm, it is not difficult to process such a shield machine. It only needs to cut a section of pipe, install a drill bit for excavation at one end of the pipe, and then connect a pipe inside for excavation. The "shaved ice" that comes down is finally connected to the motor to provide power and power, and this thing is done.

Of course, although this thing is said to be ready, it can already be used to start work, but if it is really to be put into use for excavation operations, Chen Xin still needs to give him a small upgrade.

For example, it is necessary to install a microcomputer on it, so that the device can be remotely controlled or programmed to work automatically.

Even Chen Xin has considered installing a 3D printer on this little thing, which can directly print the pipeline while driving, and even the pipeline itself can be omitted.

However, after thinking about it for a while, Chen Xin still didn't do it. He just added a remote control to the small shield machine he built to ensure that the machine can be moved forward, backward, and stopped by remote control.

The finished shield machine is like a bullet head, the front end is a hollow drill bit, which cuts the ice and snow through an arc-shaped cutting edge, and then a pipe is used inside the drill bit to remove the cut snow to ensure that the drill bit can move forward smoothly.

In addition to the pipe behind the drill, there is a heating ring, which is used to heat the snow around the shield machine, so that the snow melts and then freezes quickly under the influence of low temperature, forming an ice shell to stabilize the tunnel.

The power of the entire shield machine comes from a small-power motor installed by Chen Xin, which is responsible for driving the drill bit and the crawler wheels at the bottom of the shield machine to advance, and the power supply relies on a small battery.

After Chen Xin completed the shield machine, he took it to the nearby snow for a try, and the results of the experiment were very satisfactory.

The drill drilled very fast in the snow. Chen Xin only let it drill for about three or five minutes, and then drove forward a distance of more than two meters. According to this speed, one hour is enough to dig 20-40 meters. The distance of meters is much faster than digging by manpower.

Seeing that the effect of the shield machine he made was quite good, Chen Xin was satisfied and prepared to let the workers start preparing for construction.

It was just at this time that a worker asked Chen Xin a question. The shield machine can indeed drive quickly, but how should the pipeline be put into the tunnel?

The diameter of the shield machine is only a few centimeters thicker than the pipe. It is no problem to put the pipe straight along the drilled tunnel, but this pipeline is not a straight branch line, but there is an elbow in the middle.

This chapter is relatively slow to write, mainly to check the information of the shield machine and to conceive the construction plan, the update is late, sorry