One: When the classroom is cleaned, the most difficult thing to deal with is the fluorescent tube, which is installed at the height of the ceiling. Only by putting up a ladder or stacking tables and chairs high can you get there, but it is still inconvenient and dangerous to scrub.
Once, a spark of invention flashed in my mind: a gadget that can clean fluorescent lamps without climbing very high should be designed and manufactured. I found a big beverage bottle, cut off a section with a bottle mouth, the height is about 15cm, and cut a U-shaped notch on both sides of the section with scissors, the width is slightly larger than the diameter of the fluorescent tube: Next, put a sponge in the bottle and stick it firmly.
Finally, find a stick with the same diameter as the bottle mouth and firmly hold it. An eye washer is ready.
The use method is simple: lift the vacuum cleaner, aim the U-shaped notch at the fluorescent tube, and move it back and forth several times, so that the dust on the tube will be wiped clean. The sponge of the washing machine can also be washed with water.
Second: there is a lot of dust on the road. After riding a bike for a week or two, it will be covered with dust and need scrubbing. The body and handle are easy to scrub, and the most troublesome thing is to clean the wheels.
It is difficult to scrub the rims and spokes of the wheels. If you spray them with high-pressure water, you will waste a lot of water. Considering this situation, I invented a light wheel cleaning machine that meets the requirements of environmental protection. It is composed of aluminum alloy plate, plastic plate and sponge.
It is fixed on the fender and the brake edge. As long as the wheel is rotated, the washer can be driven to rotate together, and the spokes and rims of the wheel can be scrubbed with a sponge column with a gear segment. By slightly adjusting the structure of the washer, it can also be applied to bicycle wheels of different sizes.
The sponge column can be replaced after a period of use. Three: When playing table tennis, table tennis often rolls everywhere. Bending down to pick it up is time-consuming and laborious. Today we will make a simple and practical table tennis ball-picking tool.
First of all, you need to prepare materials: a mineral water bottle, a plastic hollow tube and glue. Make a small technological production, then cut off the bottom of the mineral water bottle, cut the bottle wall into a 3 cm strip at the bottom (just twist the table tennis around and don't fall out), and then cut a hole under the bottle mouth of the mineral water bottle so that the table tennis can roll out. This hole is used to make it easy for us to hold the ball.
Invented and then we fixed the bottle mouth of the plastic hollow tube mineral water bottle with glue. After the invention of science and technology, our production was completed, and a simple and practical table tennis ball picker was born.
A simple way to make gizmos
1. We know that we usually find some old batteries in the drawer, but we don't know if there is electricity. If we put them in electrical appliances, it will be very troublesome and we can't know the remaining power. So, you can make a small electroscope.
The method is simple as follows: use small light bulbs, very small ones (such as chandeliers or toy lights, which are sold in hardware stores). Then connect the lamps with two thin enameled wires respectively. The other ends of the two wires are used to connect the positive and negative poles of the battery you want to test. According to the brightness of the small light bulb, the battery charge can be judged.
2. Take a broken umbrella, remove the cloth, take a wire, connect one end to the TV or radio, and the other end to the umbrella, which is a good signal receiver. If you want to be professional, put more threads around the umbrella. This is the cheapest and quickest way, but it's a bit funny.
Does anyone know about scientific and technological inventions based on Chinese principles?
1. We know that we usually find some old batteries in the drawer, but we don't know if there is electricity. If we put them in electrical appliances for inspection, it will be very troublesome and we can't know its remaining power. So, you can make a small electroscope. The method is simple as follows: use small light bulbs, very small ones (such as pendants or toy lights, which are sold in hardware stores). Then connect two thin enameled wires to the lamp respectively. The other ends of the two wires are used to connect the positive and negative poles of the battery you want to test. According to the brightness of the small light bulb, the battery charge can be judged. 2. Take a broken umbrella, remove the cloth, take a wire, connect one end to the TV or radio, and the other end to the umbrella, which is a good signal receiver. If you want to be professional, put more threads around the umbrella. The quick way is just a little funny. 3. Put a match and a big needle with a quilt together, wrap it tightly with aluminum foil wrapped in cigarettes, then bend and seal the aluminum foil with the end of a matchstick and tighten it. Then install the directional tail near the tail and pull out the needle, which becomes a very simple recoil rocket. In the experiment, put the small rocket on the wire rack and light a match. Aim the matchstick at the place where the aluminum foil tube is wrapped and heat it. When the temperature rises to the ignition point of the matchhead, the matchbox in the foil is ignited, which makes the surrounding air expand rapidly and the gas is ejected from the tail mouth at high speed. Due to the recoil, the rocket launcher flies forward from the frame. If two matchsticks are put together face to face and wrapped in aluminum foil, both ends will not close. Put it on the floor and heat it from the middle. When the match in the pipe is lit, gas is ejected from both ends. Thus the momentum conservation of the system is explained. 4. Rivet two identical protractors at the center of the circle and rotate flexibly, and cut the upper protractor into a gap with a length of L cm along the right end. When measuring the angle, make its opening coincide with both sides of the angle to be measured, and the scale indicated by the notch is the degree of the angle; When drawing an angle, first aim the notch at the specified scale, and then draw two rays along the opening. This protractor can also measure the angle of three-dimensional objects (such as nuts). Because it works like scissors, we call it "scissors protractor". I recommend my classmate's small production to you. He made a small electronic balance model. Note that this is a model and can only weigh very light objects. For example, two pieces of paper. The materials needed for production are: a wooden board (preferably thinner, not too big), a washer, a paper clip, an awl, an electric soldering iron, several wires, two light-emitting diodes and a battery. These materials are easy to find. If you don't have LEDs, you can buy them in the electronic market, which is very cheap. The manufacturing process is as follows: turn a small one with an awl in the middle of the board. The washer can be hung on the hook by fixing it on the plate through the hole perpendicular to the plate. Then take two paper clips and straighten them in half, leaving only one corner. In fact, the straight part is the arm of the balance, and the remaining curved part is the tray. Do the same for the other paper clip. Then use the middle washer to weld the two paper clips together, and the paper clips should be in a straight line. Then hang the washing machine on the hook and adjust the hook with wooden boards. About 3mm is enough. Then fix two paper clips under the two trays, and prepare to use led as indicator beside the paper clips. A circuit is arranged under the board, and the balance is equivalent to a single-pole double-throw switch. This circuit is equivalent to two loops, one power supply and two LEDs. As long as the left side sinks, the tray on the left side will be connected with the pin below him, so that the circuit will be connected and the diode will emit light; If the two sides are equal in weight, the circuit is blocked and both diodes are not lit.
Simple inventions and small works
1. Daily life gizmo washing socks. After washing clothes, it is often troublesome to pick out some pairs of socks and hang them up.
Although fixing socks with buckles before washing can solve the problem, this method is easy to deform the washed socks, making them uncomfortable to wear, and it is not suitable for women's nylon stockings. Wash socks.
2. Everything is curious about how to do the gizmo. This is not a real invention. The so-called gizmos only simplify some daily necessities through their own unique ideas. 3. Help me think of a small invention in my daily life. Wash socks. It is often annoying to pick out a pair of socks and hang them after washing clothes.
Although decorative buttons can be made before washing. .
Jiangnan Times (July 23, 2004, thirty-second edition) Implementation method of environmental protection double-layer plastic bag: The implementation of environmental protection double-layer plastic bag is very simple, as long as. 4. Save the making method of the gizmo! Wrap beer bottle caps with rags and sew them together according to their own shapes, which can be made into sundries boxes or coasters; According to your requirements, put unused straws into curtains and partitions; Make simple furniture, such as small bookcases, bedside tables, CD racks, etc. Packaging boxes for refrigerators, televisions and other large electrical appliances.
As long as you have a heart in life, pay attention everywhere. 5. Make small inventions. Who knows if you will come? We will teach you something useful.
The simplest: make a pen container! ! Do you have any unused glass cups at home? Or a broken teacup, try it, as long as it is heavy enough to hold a pen. Find a beautiful cloth, or colored paper, and make a dress for the cup.
Kraft paper is also good. Wrap it in a cup, measure it well, cut a suitable piece and have more joints. 6. Please explain how to make a small invention! The homemade Kongming Lantern (1) was cut into pieces of paper with specifications as shown in the figure. One side of the first paper and one side of the second paper are glued together, and then the third and fourth papers are glued together.
. Stick them together in turn until a ball with a diameter of about 60 cm is formed, and both ends are leaking.
.7. The simplest technological invention: making a pen container! ! Do you have any unused glass cups at home? Or a broken teacup, try it, as long as it is heavy enough to hold a pen. Find a beautiful cloth, or colored paper, and make a dress for the cup.
Kraft paper is also good. Wrap it in a cup, measure it well, cut a suitable piece, and leave a margin of about one centimeter at the joint. Find some glue.
8. Invention suggestion Let me tell you a simple method. Put the paper on both sides of the DVD box, write down your schedule on the left and your motto on the right. Such a small output is completed.
The above methods are for reference only! ! 9. After simple on-site positioning, the police found that two accident vehicles could not leave the scene quickly due to serious damage, resulting in serious congestion in the northern line of the tunnel, and there was only one tractor at the entrance of the tunnel. .
Don't underestimate that an invention entered the municipal competition for the first time. Zhan, a sophomore, can also make technological inventions! On National Day this year, when traveling to Huangshan Mountain, he found the cableway cable. At home, I wash dishes, mop the floor, clean the table and so on. I always take the initiative to do what I can.
What I fear most is mopping the floor. Several houses are dragged down, and the narrow places such as cabinets and tables are not easy to drag and clean. Once, I thought while dragging, if only I had a pair of mop shoes to wear on my feet to mop the floor! So, I designed a portable mopping tool-shoe mop.
Production method: 1, the shoe mop is bigger than the shoes you usually wear, so it is convenient to put on your shoes. 2. Use rag strips as mop strips of soles, and nail thick plastic soles on the mop strips, which is waterproof and durable.
3. The upper is made of cloth shell and waterproof cloth, and the back root of the upper has a zipper, which is convenient to put on and take off. Connect the upper with the sole, and the shoe mop will be finished.
Completing a small invention is not as simple as "frowning, a plan emerges", it has to go through the steps of topic selection, conceptual design, production, practice test and improvement, success and so on. To make a small invention, the first step is to determine the object of the invention and consider what problems to study. This is the topic.
For teenagers, we should start from their familiar life reality and look for the theme of invention in schools, families and surrounding life circles. For example, when you encounter some difficulties in your study and life, you will definitely say, "If only there were.
"You want to invent this thing can be used as the object of invention. But when choosing a topic, students must combine their own knowledge level and design and production ability, and don't dream of impossible inventions.
After the genre is selected, the next step is conceptual design. That is, according to the basic scientific principles and experience, design the form, structure, method and implementation plan of the subject.
When conceiving, try to come up with multiple sets of design schemes, and then choose the best structural scheme according to feasibility and practicality. The scheme is simple, ingenious and easy to use, with the least disadvantages.
When the idea is mature, you can start making it. When making, we should make use of the existing conditions as much as possible and make beautiful works with little or no money.
For some technical problems, teachers and parents can be found, and sometimes some related manufacturers can be found to help make some parts. After the small invention sample is completed, it needs to be tested and improved in practice.
That is to say, after working for a period of time, I found the problems in use and extensively solicited the opinions of parents, teachers and classmates to see if there are any improvements or unreasonable places. Then, the opinions of all parties are integrated to improve the gizmo.
Almost every excellent invention has been "modified". At this point, you will enjoy the joy of success.
Next, you can declare to participate in youth invention and creation competitions at all levels, apply for patents or contribute to newspapers and periodicals. The application documents for the competition mainly include the application form, project description and certification materials provided by the organizing Committee. Among them, the contents of the project description are: how the topic of the invention was discovered, how the invention scheme was designed, and how the invention works were made. How does this invention embody novelty, creativity and practicality? What is your creative contribution? Suggestions and ideas for further improving the invention.
Attach appearance drawings (preferably black and white photos), structural drawings, schematic diagrams and other necessary graphic materials. It involves medical and health care products, new varieties of animals and plants protected by the state and small invention projects of animals.
Introduce the composition of your own gizmo.
One Sunday, I finished the homework assigned by my teacher and picked up a book at home to read when I was idle.
Suddenly, I saw the lid of the kettle keep jumping. I poured water into the thermos, and suddenly an idea flashed through my mind. If the water boils and I can't see it, won't the kettle melt? Our family once burned a kettle because the whole family was not at home at that time. I have to find a way to prevent the kettle from melting. I had a brainwave. If you tie a bell to the lid of the kettle, then tie a small rope to a nail, and then nail the nail to the wall, won't the bell ring when the water boils? I'll do it first and see if I can succeed. I mean it. I'll do it in order. First, I will tie the bell to the pot cover, then nail the nail to the wall, and then I will hang a thin and long rope on it. I put the water in the pot. After a few minutes, the bell really rang and the wire was not broken. I jumped up and down happily and told my father my little invention. Dad said with a smile.
Hearing my father's praise, my heart is as sweet as honey. Since then, my kettle has never melted.
From this incident, I understand a truth: it is not easy to achieve excellent results, and it takes effort. Whatever you do, you can't give up halfway. You will succeed as long as you are patient.
Small production. The process of small inventions (a little more)
Small production-water pipe seesaw 1. Hard plastic pipe with uniform thickness, 3 cm in diameter and 40 cm in length; A soft wooden stick the thickness of a plastic pipe and 5 cm long; Two corks; Two thin sheets of iron; Sewing needle
2. Make a hacksaw, scissors, awl and knife. 3. Manufacturing step ① Cut the plastic pipe from the middle, divide it into two sections with equal length, and drill a small hole at the top and bottom of each section.
Then connect the two pipes with a 5 cm long soft wooden stick and pass a sewing needle through the soft wooden stick. (2) cutting the thin iron sheet into two brackets and two figures, and fixing the figures on both sides of the plastic pipe; (3) Fill the pipe with water and plug it with a cork, put the sewing needle on the bracket and adjust the balance of the pipe on the bracket.
At this time, water flows out rhythmically from the small hole under the tube. At this time, as long as one end of the seesaw is pressed, the seesaw will automatically tilt upward and fall, and the water on both sides will drop out in turn until all the water drops out.
Attention, please put it in the basin to prevent the water from wetting the table. Think about why it goes up and down automatically.