Chapter 307 Water Turns into a Big Spinning Wheel

Liu Si took a standard-weight porcelain bullet with an Arabic numeral 2 written on it.

The soldier who had just hung the string whistled, the two soldiers on the side took the wooden pole, Liu Si walked to the theodolite on the side, and aimed at a wooden stake nailed in the distance under the city with a telescope: "Area 103 ahead, the gauge is 152, the height is plus 2, the 2nd hollow porcelain bullet, put!" ”

The ballista has a horizontal grip on one side of the control part, like a bicycle faucet.

After aiming according to Liu Si's instructions, the soldier pinched a brake-like device on the dragon head in his right hand, and the porcelain bullet was fired with a bang.

Next, there was another operation, Liu Si said again: "Area 103 ahead, ruler 154, height plus 2, left 3, No. 2 hollow porcelain bullet, put!" ”

Boom! Another porcelain bomb was fired.

The porcelain bullet flew out of the city, smashed into the mud two hundred paces away, and did not break, but it bounced up again, and flew out of the distance in a row, and then stopped.

Liu Si watched with a theodolite for a while, fine-tuned the horizontal instrument panel and vertical ruler on the ballista, and then walked in front of Su You: "Report to the judge, we are debugging the ballista, please instruct!" ”

This is also the requirement of Su You's order, the archers of the Tuntian Army, often switch identities between peasants and soldiers, weapon tests, of course, automatically transferred to wartime regulations, Liu Si will be punished if he does not report so.

Su You was very satisfied: "Take a break, the ballista has improved a lot." ”

Liu Si said: "Yes! According to the report, today's ballistae only need to carry springs and some metal workpieces, and after arriving at the station, the wooden components are processed according to the drawings, and after the assembly is completed and debugged, it can be put into use! ”

Su You said: "When it was just excited, the traction device was used, and the wire rope was successful? ”

Liu Si replied: "Tell the judgment, it's not a wire rope, it's a transmission chain!" ”

Su You shook his head and exclaimed: "There are yours!" In the past few years, I have been blind for the sake of Jinshi's fame. ”

Liu Si didn't answer well, he just laughed.

Su You gave him a kick: "You laugh at a fart!" Young master, I don't care about it all day long, don't you have to worry about it? Hurry up and debug. Those rats in the city are now listening to the beggar bragging in the noodle shed, and this baby is happy to have a treat, you only have this half a day. ”

Liu Si Lizheng: "Yes! Young master, don't worry, several groups are in the city, half a day is enough! ”

Su You said: "I'll go to Commander Guo to have a look." ”

The training of crossbowmen took place in the dockyard and was unknown to outsiders.

The crane shin crossbow has also been changed quite a lot, the bottom grip has become narrower, the crossbow arm has become an all-steel plate structure, and small pulleys are used at both ends.

The pulley is a good thing, which can reduce the deformation and displacement distance of the bow blade at the same drawing distance, and maximize the drawing distance, which is key to increasing the range and muzzle velocity of the crossbow arrow.

It also protects the bowstring and controls the vibration of the string.

The shoulder handle has also been narrowed for more ergonomics.

The levers on both sides become rings, so that they fit more well.

The arrows are basically the same as before, but they are no longer completely standard Santing, and the tail of the arrow has shrunk a bit and become smaller.

One of the three tail feathers is dyed red, and this tail feather is perpendicular to the string groove on the arrow, so that the crossbowman has a reminder that he will not misplace the arrow.

The overall length of the arrow is also a little shorter.

The arrows are still of the conical bullet type, almost the same as before.

But no change does not mean that there is no progress, on the contrary, Su You believes that this is the biggest progress in the design of the crane shin crossbow.

Because the current arrowhead is a scheme that has been re-determined after a large number of experimental data collection, combined with precise calculations, considering the processing technology and cost. Instead of the previous brain-slapping scheme.

That is to say, although there is no change in appearance, this time it is the result of fine science and engineering experiments, and the experience gained on this road of exploration is the most valuable wealth of Meishan Institute of Technology.

Therefore, Shi Fu and Zhang Qi, for this stereotyped plan that has not changed, also received two Discoverer Medals.

A few years ago, it was very laborious for Su You to open the crane shin crossbow, but now it can be easily opened.

Step on the foot ring, bend down and hold the ring, straighten your waist, the bowstring scrapes through the press, and there is a pleasant clicking sound of the machine.

It's slight, but it's a pleasure compared to the crunch of most crossbows these days.

The height of the front sight on the knocker is significantly lowered, and on the premise of ensuring the passage of the tail of the arrow, try to get as close to the launch trajectory as possible.

Even taking these into account, Su You couldn't help but praise the rapid development of Meishan Institute of Technology.

With a pull on the trigger, there was a jolt over the shoulder, and the crossbow bolt flew almost in a straight line, disappearing into the target made of straw seventy paces away.

"Good!" The archers from the surrounding countryside vigorously cheered.

Su You asked Guo Long: "Commander Guo, are the arrow feathers enough?" You can't save your training because of the arrows. ”

Guo Long said: "Tell the judgment that the arrows used for training, and the dried and glued palm leaves for tail feathers, the training intensity is enough to guarantee!" ”

Su You nodded: "How is the situation of the recruits?" ”

Guo Long said: "It's okay, I've been training for half a month, I followed the instructions to find a ruler, and the accuracy of the head within 60 steps can basically be guaranteed." ”

Su You said: "You still have to practice, practice more, even if you are a crossbowman, you can't relax in cross-country ability and physical training." Tell them that if they perform well and can make military merits, they can get a salary according to the treatment of the Crane Army! ”

Guo Long Lizheng: "Obey!" ”

With the guarantee of military strength, Su You began to organize large-scale production.

The first thing to deal with is the mountain of ramie linen.

In the later Yuan Dynasty, the "Book of Agriculture" "Atlas of Agricultural Tools" appeared in the Yuan Dynasty. Utilizing the Door "and" Farm Tools Atlas XX? In "Ramie Gate", a kind of water-powered spinning machine that appeared in Sichuan at that time was introduced in detail - the water-to-large spinning wheel.

This is a fairly complete textile machine, which already includes the three parts necessary for the so-called "developed machine" - the engine, the transmission mechanism and the machine tool.

The engine is a water wheel, which is exactly the same as a water wheel for water milling.

The transmission mechanism is composed of two parts, one is the transmission spindle, and the other is the transmission yarn frame, which is used to complete the work of twisting and winding the yarn sliver.

The transmission between the working machine and the engine is composed of guide wheels and leather strings, etc., which can already achieve "the chord rotates with the wheel, all the machines move, up and down correspondingly, and the urgency is appropriate." ”

The machine tool is the part of twisting and winding yarn making, which is composed of a frame, a spindle, a yarn guide rod and a yarn frame.

In order to make each yarn sliver not entangled with each other in the process of twisting and winding, the water transfer RV also installed 32 small iron forks in front of the frame to "divide the performance strips", and at the same time, the yarn sliver can be formed well, and the effect is the same as the transverse guide rod on the reeling car.

Moreover, although the large spinning wheel recorded by Wang Zhen is used for spinning hemp, it has been slightly modified and reduced in size, and can be used to twist silk. "So it's quite adaptable.

The construction of this spinning machine was so remarkable that it won Needham's high praise as "enough to amaze any economic historian".

The so-called "big and small wheels have a chord, and each wheel is connected to each other." The machine rotates with the crowd, but it is self-entangled. It can be used as a substitute for female workers and double the province, and it is necessary to supply the cloth threads before the levy...... The spinning worker has many days and 100 catties, and he must rely on water power to be as fast as a god. ”

In one working day, hundreds of catties of yarn can be spun!

Regarding the record of the use of water-to-large spinning wheels, the "Book of Agriculture" mentions: "In the hometown of hemp and ramie in the Central Plains, there are many places near the stream. ”

Because its efficiency is too high, it is often shared by many households: "Or many families have many achievements, but they are gathered under the car, and the scales are divided into parts, and they can not be finished." ”

In the "Shuyan Chronicle" of the Yuan people Jiejiesi about Dujiangyan, it was recorded, "Where the canal is placed today, the place where the mill is spinning, with tens of millions, flows at four times and is infinite." ”

Tens of thousands of large-scale water conservancy machinery have been set up along the main canal of Dujiangyan, of which in addition to the "mill" for processing grain, some of them are for processing silk and linen "spinning".

Such a mature large-scale application in the Yuan Dynasty will not appear out of thin air, so when Su You carefully searched for agricultural information in the southwest, he specifically named this point, and a businessman in western Sichuan sent a precious information on a water-powered spinning machine.

Eight spindles can be processed at the same time, but the wooden bearings and rough hemp rope drive result in low efficiency.

However, with this mechanical foundation, coupled with the existing silk reeling machine of the Su family, Su You organized the science and engineering team to vigorously transform the two, and finally developed a spinning machine with much higher efficiency than the record of Wang Zhen's "Book of Agriculture".

The first thing to transform is the transmission belt, which is replaced with a transmission chain to offset the power loss caused by belt slippage.

This thing has been invented by Chinese Zhang Sixun for almost a hundred years, and it is estimated that it was inspired by the water keel car.

Of course, the science and engineering team led by Su You could not be so rough, and the transmission device of the ballista trigger is very close to the modern bicycle chain.

There is also a device to adjust the speed, a device to synchronize the speed of the spindle, and a crank wheel device that combines the flywheel and the crank, all of which are added one by one.