Traveling through 70's wine

Wen Qing didn't want to tear down and rebuild, so after communicating with Master Liu, she suggested replacing the roof of the main house with blue brick tiles. The floors of the two bedrooms and a study were all paved with bluestone slabs. A kitchen was built behind the main house, and the back wall was made into a fire wall. This was mainly because the north is cold in winter, and the fire wall is relatively clean, and the stove is not burned in summer.

Only the roof of the east wing was replaced, and the rotten beams were replaced with new wood, and the thatch on the roof was replaced with tiles. The animal shed on the west side was built into a kitchen and bathroom, and the septic tank was built outside the courtyard wall, and the courtyard wall also had to be raised so that she could not see into the yard at a glance from the outside.

Wen Qing asked Master Liu if they could dig a well in the backyard. She had always envied those who had wells at home so they didn't have to carry water to irrigate the land.

Erxia Village has running water, but she still has to fetch water from the river to irrigate the land. If she wants to grow crops in her own land in the future, she can use well water.

Mr. Liu nodded in agreement and calculated that as long as Wen Qing bought the blue bricks, tiles, lime, cement and wood, he could finish the repair within 45 days. So he said to Wen Qing, "Miss, go buy the blue bricks, tiles, lime, cement. I can buy earth bricks, wood and bluestone slabs in the village. The cost of the repair, including materials and labor, is 1000 yuan."

Wen Qing: "Master Liu, do you know where to buy blue bricks and tiles? Can earthen bricks and wood be exchanged for grain?" Bluestone slabs need to be obtained from the back mountain.

In 78, there was still a severe food shortage in rural areas, and the villagers had no objection to exchanging grain for wood and earthen bricks.

Mr. Liu was going to find carpenters, stonemasons and bricklayers with better skills in the village. Wen Qing promised to pay two yuan a day to the master craftsmen and one yuan a day to the laborers. If they did a good job, they would be given 50 kilograms of corn each after the project was completed.

Mr. Liu was very satisfied and pointed out a place for Wen Qing to buy bricks and tiles. There was a state-owned brick and tile factory in a nearby place called Wulipu, where she could buy bricks and tiles there. If she bought a lot, the factory could even deliver the goods to her door.

Captain Liu gave Wen Qing a letter of introduction. She went to Wulipu and found the person in charge of the brick and tile factory. In addition to paying the normal price, Wen Qing also gave 1000 kilograms of corn. The person in charge promised to give her priority in supplying and delivering goods.

She found a construction team that was building a road and exchanged 3000 chickens and rabbits for 20 bags of cement and 40 bags of lime. The team leader distributed these things to everyone as welfare, and everyone in the construction team was very satisfied.

Wen Qing got the building materials and set a start time with Mr. Liu. She came every day to check the progress of the project and settle the day's wages.

After returning to school, Wen Qing went to the school-run factory, which is the internship base for various departments of the school. As long as the professor signs and agrees, students can start making their designs, but the students have to pay for the materials themselves.

Wen Qing designed a tea picking machine, which is mainly for the convenience of picking tea in the tea garden in the space. Now there are 20 acres of tea garden in the space. If she only picks tea, she can pick up to 5 acres a day. If she wants to expand the area of ​​the tea garden in the future, it is really unrealistic to rely entirely on manual tea picking.

The tea picking machine is modified based on a tractor, with an added tea picking kit that can be adjusted in height. A picking arm drives a leaf remover and a rotating blade rack, which can cut the tender leaves of the tea tree and send them into the tea container through a conveyor belt.

The picking arm can adjust the picking height, and the blade can adjust the picking depth.

After designing the tea picking machine, Wen Qing handed the drawings to Professor Xu Ziqi. Professor Xu was very interested in her design and pointed out several problems in the design. After Wen Qing took it back to modify it, Professor Xu signed and agreed to let her try to make a sample.

Wen Qing liked the feeling of immediately turning what she had learned into reality. She applied for parts according to the design drawings. Since she modified the design based on a tractor, all the power systems and driving systems could use tractor parts.

She took out the old tractor parts stored in the space, found the masters in the school-run factory, and begged them to help her repair it.

When repairing these parts, she felt that as her inner strength increased, her control over her hands also increased, and her hands-on ability became stronger. Some parts that required machine processing could now be made by hand.

She and the masters from the school-run factory repaired the tractor parts in no time. Just from this one time, she felt she had learned more than in class.

So, apart from attending classes, she now spends all her time in the school-run factory.

After making all the parts, Wen Qing discovered that there was a problem: the chassis of the tractor was not as tall as the tea tree.

She could only redesign a large-size crawler wheel, which the school-run factory was unable to produce. Professor Xu contacted a tractor manufacturer for her.

Wen Qing had to go to the tractor factory in Pingjing, find the production section chief, and take out Professor Xu's letter of recommendation.

The production manager looked at Wen Qing, a young female student, who wanted to customize crawler wheels. He looked at her with suspicion and said, "With Professor Xu's recommendation letter, we can make it, but we need to see your drawings first. Otherwise, wouldn't it be a waste if you can't use it?"

He called Zhang Yue, an engineer from the technical department. Wen Qing had no intention of keeping it secret, and she was very happy that someone was keeping track of it for her.

She posted her design drawings on the blackboard and explained her design ideas to Zhang Yue. Zhang Yue listened carefully and calculated whether the design was reasonable. After listening to Wen Qing's explanation, he found that her design was quite innovative. He also focused on checking the matching degree between the tracked wheels and the car body. He found it completely feasible, so he agreed to Wen Qing's customization requirements.

Wen Qing readily paid the 4000 yuan customization fee and ordered eight wheels. Although it was expensive, she still hoped that the tea picking machine could be used in the space tea garden in the future.

The manufacturing of tracked wheels is a mature technology. Wen Qing quickly got eight wheels and transported them to the school-run factory. She worked with the masters of the school-run factory to complete the installation of the tea picking machine.

After two months of hard work, Wen Qing finally made two tea-picking machines. She put one away and invited Professor Xu to inspect the other.

Professor Xu personally drove the tea picking machine. Although the school did not have tea trees, the various operations were very smooth. Wen Qing introduced that this tea picking machine can not only pick tea, but also be used for pruning garden hedges to reduce the burden on garden workers.

After hearing this, Professor Xu drove the tea-picking machine into the school garden and tried to trim the hedges.

He and Wen Qing got on the tea picking machine. Wen Qing stood behind the driver's seat and drove the tea picking machine with Professor Xu to trim the messy hedges.

Professor Xu drove a tea-picking machine and cut the hedge with the rotary knife installed on the front of the tractor. As the tea-picking machine passed by, a neat hedge appeared behind it.

The difference between picking tea and trimming hedges is the distance setting of the tool. The height of the hedge trimming tool can be more than ten centimeters, but the height of the tea picking tool should not exceed five centimeters, otherwise the cut tea leaves will be too old.

Wen Qing added: "To achieve mechanized tea picking, we must also standardize tea tree management. The height and spacing of tea trees must be standardized.

Of course, you can use a tea plucker to prune the tea trees in winter to control their shape.”

Professor Xu nodded continuously and said, "Xiao Wen, you have filled the gap in our country's tea picking machinery. I will report to the school." The tea picking machine passed the acceptance inspection.

Wen Qing also showed a big smile on her face. This was the first agricultural machinery she designed by herself.

A few days later, the school leaders, together with the leaders of the Agricultural Machinery Department of the Ministry of Machinery, appeared at the school-run factory. After testing, they were very satisfied with its results.

Professor Xu asked Wen Qing to write a paper and try to publish it in "China Machinery Magazine".

Wen Qing spent a week making public the design concept and actual effects of the tea-picking machine, wrote a paper and sent it to a magazine.

Pingjing Institute of Technology also formally submitted the thesis report to the Ministry of Machinery and the Ministry of Agriculture.