Back to the 80s Machinery Factory

Chapter 573 Small Invention Semi-Finals

Teacher Zhang grew increasingly angry as she spoke, and retorted with a question:
"Chen Luyang closed the door, and Tao Runze and the other four were locked up by him?"

"Is Chen Luyang Zhang Fei or Zhao Yun? One person guarding the gate, a thousand troops couldn't break through?"

Hearing laughter coming from all directions in the classroom, Zheng Zhe could only bite the bullet and explain:
"Teacher, isn't this a dormitory invention competition held by the school? Chen Luyang designed an automatic door closing device."

"As a result, the device locked all their dorm rooms inside. Now the doors are locked, and the only way to open them is to remove them from the outside."

The entire classroom fell silent for half a second.

The next moment, the whole class burst into laughter!

Teacher Zhang looked like she was questioning the meaning of life.

"An automatic door locking device? It locked me in?"

Zheng Zhe nodded and reiterated the main point:

"Teacher, they really didn't skip class on purpose. Last night, when they were testing the door-locking device, I was outside helping to push the door open."

"The door was really locked tight, but I don't know why I couldn't open it this morning."

Hearing Zheng Zhe's explanation, even Teacher Zhang couldn't help but laugh.

"So you didn't help them out and let them go?"

Zheng Zhe said awkwardly, "We did help. We tried it this morning, but we couldn't open it at all. We were in a hurry to get to class, so we asked the dormitory supervisor to help us."

Teacher Zhang couldn't help but laugh for a long time, and then raised her hand to press down the order.

"Alright, let's stop discussing Chen Luyang for now and continue with class..."

……

In the end, all members of room 421 were freed by the screwdrivers of the dormitory supervisors!

"Master, your skills are amazing! It's like a cure-all!"

Chen Luyang looked at the dormitory manager squatting on the ground, putting the tools back into the tin toolbox, and couldn't help but admire him.

He originally thought that dismantling the door would be a difficult task, requiring a lot of time to swing a sledgehammer.

To everyone's surprise, the repairman brought out three tools: a screwdriver, pliers, and a hammer. In less than five minutes, the entire door was removed.

What shocked him even more was that after taking the door off,
The mechanic took out all the ropes and pulley remnants, replaced the lock tongue with a new one, and quickly put the door back on.

Listening to Chen Luyang's flattery, the dormitory supervisor said:
"The skills are all learned through practice. Every year around this time, I have to dismantle a dozen or twenty doors."

"Your door is relatively easy to dismantle."

"Two years ago, a mechanical engineer installed a 'hammer-type automatic door closing device' himself. As a result, the hammer fell down and jammed the latch, and the door could not be opened. I went to remove the door hinges and rescued him."

"Another little girl made a 'spring-loaded lock' that uses the big spring from an old sewing machine to close the door."

"Who knew the spring tension was too high, the latch snapped into the door frame, and the key wouldn't turn. In the end, I had to disassemble the whole door."

Good guy...

Shen Fei was absolutely right; he wasn't the first person to install an automatic door closing system!
Driven by a man's intuition, Chen Luyang instinctively suspected that the dormitory supervisor in front of him was very likely one of the mysterious judges.

With the aim of "winning over as many forces as possible," Chen Luyang tentatively asked.

"Master, what do you think of my device?"

"Good."

"very nice?"

"Easy to dismantle."

wipe……

Chen Luyang's smile vanished from her face.

……

Although Tao Runze said "no need, no need," Chen Luyang still went to the convenience store to buy Lao Tao a new foot bath basin as compensation.

As the saying goes, good news doesn't travel far, but bad news travels a thousand miles.

Zheng Zhe's remarks in the advanced mathematics class spread the news of Chen Luyang's "technological stigma" throughout the entire economics department at lightning speed.

The good news is that Chen Luyang feels she is more popular with people now.

Walking through the cafeteria, the teaching building, and even the playground, students would watch him and laugh.

His smile contained no malice or mockery, only laughter and giggles.

The bad news is: his roommates won't let him do experiments in the dorm anymore.

Left with no other choice, Chen Luyang borrowed a piece of scrap wood and an old door lock from the External Relations Department and set up a "small experimental platform" by the window.

He meticulously measured the angle, calculated the elastic force, and recorded the rebound process, working on it for several whole days.

However, no matter how he modifies it, as long as the rope passes through a certain angle, it will inevitably produce a "momentary tightening" jamming effect.

The final result is a complete lockout.

You can't open it from the outside, and you can't get out from inside.

I couldn't find a solution no matter how much I thought about it.

at last!

Having no other option, Chen Luyang dialed the phone number of the provincial machinery factory.

When he heard his son calling him, Chen Dazhi, with a razor in his left hand and his belt in his right, swaggered into the mailroom.

"Hey son! What's up?!"

Chen Dazhi cleared his throat and, under the envious gaze of Old Tian, ​​spoke with full confidence.

"...What? A door-closing device? What are you doing with that?"

"Oh, oh, invention... You could have made this little gadget yourself by just puffing it up, why did you need to ask me?"

"No, how can you be so stupid!"

"Jun Jun even won an award for his handicrafts at school, and you can't even make something like this?"

"If you tie the pulley and the locking bolt together, how can the rope not pull back?"

……

"How could I have given birth to a son like you!"

"No, I don't understand, figure it out yourself!!!"

"I'm busy! Don't disturb me while I'm working!"

Snapped.

Chen Dazhi slammed down the phone, and in a fit of anger, he grabbed a razor and smeared it all over his face.

"This child is nothing like me; he can't even close a door properly."

He thought his son was calling to report his grades, but who knew he was so stupid!

After hanging up the phone, I sulked for two seconds.

Chen Dazhi was still worried about his son, so he picked up the phone with his chubby fingers and dialed back.

At Peking University, Chen Luyang was dejectedly preparing to return to her dormitory.

He originally wanted to ask Zhang Guoqiang and the others, but after all...
It's rather embarrassing for a senior engineer like him to ask such a trivial question.

Besides, his father was a one-in-a-million Grade 8 worker, something Zhang Guoqiang and the others couldn't compare to.

That's why he thought of calling Chen Dazhi to ask what to do.

In the end, I didn't get the answer I wanted, and instead got a scolding.
"I might as well go back and ask Uncle Zhang... at least Uncle Zhang won't scold me." Chen Luyang muttered to herself, about to walk back, when she suddenly heard the phone ring behind her.

Ok?
Chen Luyang suddenly turned around.

He rushed back in a few steps, picked up the phone, and listened!
"Oh, Dad!! I knew you couldn't abandon me!!!"

"Please speak slowly, what should we do with that piece?"

"An eraser? Right! Why didn't I think of using an eraser as a pad!"

Chen Luyang excitedly slapped his thigh, feeling his thoughts gradually becoming clearer.

"And then what? What do I do if the rope keeps getting tangled?"

"I understand, I understand...! You have to thank my dad! It's like he has eyes that can see a thousand miles, he can tell what's wrong with me even through the phone line."

"Okay! I got it! I'll go back and try it right away!"

With a snap, the phone was disconnected.

Chen Luyang's eyes lit up, and she strode back to her dormitory.

Soon, it was time to submit the draft of the small invention.

Since the Department of Economics is a humanities department, students usually study academic papers on topics such as "money circulation," "planned economy," and "labor theory of value."
Anyone who can produce even a single screw can be considered a rising star in science and engineering.

Therefore, for this invention competition, as long as someone submits an invention, the department will generally encourage them to report it!

The teachers' spirit can be summed up in four words: participation is key.

So even though Chen Luyang's inventions made him famous and locked him in his dormitory, the teachers in the department were still quite happy to promote his inventions to the school.

Anyway, as long as it's not about blowing up the building, the department should support it, and it absolutely will!

With the completion of the "Dormitory Invention Competition Showcase", the highly anticipated semi-finals have officially begun!
This year's semi-finals will not be held at the main sports field of Peking University, but at the "East Small Sports Field" near the dormitory area.

This playground is located between the dormitories and the canteen. It's not very big, but it's the place on Peking University where people gather most easily throughout the day.

After everyone finishes eating, they can just turn this way and get there without having to turn their feet or miss the fun.

As soon as the display booth was set up today, students flocked to it, and in the blink of an eye, the playground was packed with them.
Even the windows on the third floor of the dormitory building were opened, and many people leaned on the windowsills to look down, afraid of missing any excitement.

Students from each department stood in front of their respective booths with their entries.

From first-year students to graduate students, from Chinese literature majors to mathematics majors, even the cafeteria cooks and school janitors all came to watch the spectacle.

Unlike previous competitions that focused primarily on "showcase,"

This year's invention competition emphasized "hands-on practice" and "dormitory improvement." Many of the exhibits were works that used recycled materials and simple methods to solve big problems, each one more down-to-earth than the last.

A male student from the physics department invented a "labor-saving sock drying machine" using an old bicycle wheel and a sewing machine pedal. He hung his socks on it and stomped on it a few times, making the socks spin around and spray water droplets far away.

A female student from the Chemistry Department made a dormitory deodorizing heater using an alcohol lamp, a scrap iron box, and activated carbon.

A geology student created an "under-bed storage drawer track," turning the space under the bed into a drawer, so you can just pull out whatever you want.

A biology student even made a "self-watering planter" using a medical IV drip bottle and a wire frame.

……

In short, it's incredibly diverse, with all sorts of things!

"This year is so lively!!"

The young man with glasses at the radio station took a few quick photos of the "self-watering plant stand" with his camera, then turned to the reporter next to him.

"Yes, everyone not only put their minds to it, but also truly cared about the students' lives. This is the most precious spirit of us Peking University youth!"

The correspondent looked excitedly at the invention before him, quickly jotting down notes on paper while asking the students exhibiting the invention:

"Hey classmate, what's the name of your invention?"

"I call this a multi-angle rotating map stand."

As the boy spoke, he turned around and adjusted the entry next to him.

The entire installation is assembled from wooden planks, old bicycle bearings, and scrap iron frames; it has a simple yet eye-catching appearance.

“Our school building has limited wall space. After the map is posted, students can only stand in one row, and those in the back row can't see it.”

"My map stand can rotate 360 ​​degrees and can be turned like a book. It can hold four or five maps together. When the teacher talks about China, it can be rotated; when talking about the world situation, it can be turned over again."

Saying,

With the boy's hands supporting the wooden handle, the entire map flipped easily like a globe, from horizontal to vertical, then from the Northern Hemisphere to the Southern Hemisphere, and even folded to the side, the movements smooth and without any hesitation.

"The country needs to popularize geographical knowledge and support the Third Front construction and border development. Map education is essential."

"My stand is made entirely of scrap wood and old axles. It's simple to make, and you can just place it on the podium when you want to use it."

As soon as he finished speaking, a round of enthusiastic applause erupted around him. Even the judges who were giving the scores couldn't help but step forward, turning the map stand over and over to personally test its stability, nodding repeatedly in approval.

"This can be promoted as an educational tool!"

……

Just as the geography students' rotating map stand was receiving rounds of applause,
Before the students around him could throw their votes into the individual ballot boxes in front of them,
A sudden exclamation came from the other end of the playground:
"Hey, hey, hey, hurry over there!! I heard there are international students giving a presentation!"

"International students are participating in the competition? We'll have to see!"

The reporter was about to continue the interview, but before he could even pick up his pen, he saw the crowd of students in front of him suddenly surging in the same direction as if they were being drawn by a magnet.

"What good stuff is there?"

Unable to contain his curiosity, he craned his neck as far as he could.

"Go! Go and see!"

The boy with glasses, holding a camera, ran after the crowd.

In less than half a minute, two-thirds of the people who were still gathered around the map stand had turned away and left.

The open space in the center of the playground was now packed with people, with even those on the periphery tiptoeing to get inside, and heads peeking out of the dormitory windows, watching intently.

"Where did this spring mattress come from?" someone asked in surprise.

"It's not a trampoline! It's...it's Chen Luyang!!!"

"Why is he lying there?! Is he pretending to sleep?!"

"He's not sleeping, there's a door next to him! Did he move his entire dorm room onto the playground?!"

The boy with glasses and the reporter finally managed to squeeze into the first row, but when they saw what was in front of them, they were both dumbfounded.

"Wow... This is the first time I've ever seen someone compete while lying down."

"What is this for?"

"Is he here to air out his blankets?"

Accompanied by the little glasses' three confused questions,

In the center of the playground, Chen Luyang lay on a metal folding bed as if she were in postpartum confinement, covered with a large cotton quilt, with a rope tied around her right wrist.

On one side of his bed,
Pierre, Alexander, Fadi, Park Sung-ho, and Hans, five international friends, dressed formally like executioners, stood together, holding onto a wooden door.

"Mine is called the automatic door closing device for bunk beds."

Chen Luyang lazily raised her hand and gently pulled, and with a "click," the door closed automatically.

"Now the door is closed."

After Chen Luyang finished speaking, she tugged on the rope again. With a "click," the bolt automatically popped out and locked securely, the action completed in one smooth motion.

Every time Chen Luyang closed the door, Pierre and the other four would unlock it as if playing a game, tirelessly demonstrating the ingenious use of the automatic lock to everyone.

(End of this chapter)