"South Guide Car" Cash City
At about 5 o'clock on June 25th, the reporter came to Mu Xiaofeng's home, a resident of Jingyuan Community of Lanzhou Valve Factory. The first thing that caught your eye when you entered the door was the antique compass that Mr. Mu spent nearly three years developing. From the outside, there is no obvious difference from the handcart used in ancient times, but after careful observation, the reporter found that there is a sandwich at the bottom of the car slot. From the wheel on the side of the wheel, the gear can move regularly with the rotation of the wheel.
Solve the "mystery" after studying for 3 years
As a doctor, Mr. Mu took a keen interest in ancient mechanical inventions after work. A few years ago, in Xi Science and Technology Museum, he saw the exhibition of the South Compass, but disappointingly, only the appearance of the South Compass was exhibited, but there was no relevant introduction to its internal structure. When I came back to search on the internet, I learned that the structural principle and manufacturing technology of the South Compass had become a mystery. Although after a lot of research, the results are not significant, but it does not reflect the simple and practical value invented by the ancients.
In order to inherit the scientific ideas invented by the ancients, Mr. Mu began to study and manufacture the South Compass in his spare time. From the initial data collection, principle demonstration, hand-drawn sketches to finding suitable wood and parts processing and manufacturing, he never gave up no matter what difficulties he encountered. Although it cost nearly 10,000 yuan to make this tour guide car, his curiosity to solve the mystery kept him going. Looking at the hard-won achievements in front of him, Mr. Mu's face reveals bursts of joy from time to time.
During the interview, Mr. Mu introduced the principle and technology of the invention to the reporter in detail. The antique compass car has an upper bottom plate and a lower bottom plate, and a front horizontal gear and a rear horizontal gear (the gear radius is about 23 cm) which are meshed with each other. Before you leave, set a direction for the "guide fairy" on the bus. No matter how you turn to the "guide fairy", you will always point to the set direction. The whole device is made of wood, and there is no nail, which completely conforms to the invention principle of the ancients: simple structure and beautiful appearance.
Mr. Mu also told reporters that he intended to apply for a patent for antique compass cars, and the application was approved.
Reconstruction seismograph
At the end of the interview, the reporter found that another invention of Mr. Mu, the seismograph model, had applied for a patent and the object was still being made. As the earliest scientific instrument to detect seismic waves in the world, seismograph and inventor Zhang Heng have always been the symbol of ancient scientific and technological civilization in China. Seeing that the long-lost model is about to see the light of day in the hands of Mr. Mu, we can't help but look forward to its coming out!